Create Presentation
Download Presentation

Download Presentation
## R eview : exponential growth and Decay functions

- - - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - - -

**In this lesson, you will review how to write an exponential**growth and decay function modeling a percent of increase situation or decrease situation by interpreting the percent of increase as a growth factor or percent of decrease as a decay factor.**Review: exponential growth functions**Exponential growth happens by repeated multiplication by the same number.**Review: exponential growth functions**A certain species of bacteria will double in population each week in a laboratory.**Review: exponential growth functions**A certain species of bacteria will double in population each week in a laboratory.**review: exponential growth functions**A certain species of bacteria will double in population each week in a laboratory.**review: exponential growth functions**A certain species of bacteria will double in population each week in a laboratory.**review: exponential growth functions**A certain species of bacteria will double in population each week in a laboratory.**review: exponential growth functions**A certain species of bacteria will double in population each week in a laboratory.**review: exponential growth functions**A certain species of bacteria will double in population each week in a laboratory.**review: exponential growth functions**A certain species of bacteria will double in population each week in a laboratory.**review: exponential growth functions**A certain species of bacteria will double in population each week in a laboratory.**review: exponential growth functions**A certain species of bacteria will double in population each week in a laboratory.**Review: exponential growth functions**A certain species of bacteria will double in population each week in a laboratory. The growth factor is 2.**review: exponential growth functions**A certain species of bacteria will double in population each week in a laboratory. Suppose you initially have 25 specimens of this bacteria.**review: exponential growth functions**A certain species of bacteria will double in population each week in a laboratory. Suppose you initially have 25 specimensof this bacteria.**review: exponential growth functions**A certain species of bacteria will double in population each week in a laboratory. Suppose you initially have 25 specimensof this bacteria.**review: exponential growth functions**A certain species of bacteria will double in population each week in a laboratory. Suppose you initially have 25 specimensof this bacteria.**review: exponential growth functions**A certain species of bacteria will double in population each week in a laboratory. Suppose you initially have 25 specimensof this bacteria.**review: exponential growth functions**A certain species of bacteria will double in population each week in a laboratory. Suppose you initially have 25 specimensof this bacteria.**review: exponential growth functions**A certain species of bacteria will double in population each week in a laboratory. Suppose you initially have 25 specimensof this bacteria. The initial value is 25.**review: exponential growth functions**A certain species of bacteria will double in population each week in a laboratory. Suppose you initially have 25 specimensof this bacteria.**review: exponential growth functions**A certain species of bacteria will double in population each week in a laboratory. Suppose you initially have 25 specimensof this bacteria. Let x = number of time periods since growth began**review: exponential growth functions**A certain species of bacteria will double in population each week in a laboratory. Suppose you initially have 25 specimensof this bacteria. Let x = number of time periods since growth began Let y = amount of the growing quantity**review: exponential growth functions**A certain species of bacteria will double in population each week in a laboratory. Suppose you initially have 25 specimensof this bacteria. Let x = number of time periods since growth began Let y = amount of the growing quantity**review: exponential growth functions**A certain species of bacteria will double in population each week in a laboratory. Suppose you initially have 25 specimensof this bacteria. Let x = number of time periods since growth began Let y = amount of the growing quantity**review: exponential growth functions**A certain species of bacteria will double in population each week in a laboratory. Suppose you initially have 25 specimensof this bacteria. Let x = number of time periods since growth began Let y = amount of the growing quantity initial value growth factor**review: exponential growth functions**A certain species of bacteria will double in population each week in a laboratory. Suppose you initially have 25 specimensof this bacteria. Let x = number of time periods since growth began Let y = amount of the growing quantity initial value growth factor**review: exponential growth functions**A certain species of bacteria will double in population each week in a laboratory. Suppose you initially have 25 specimensof this bacteria. Let x = number of time periods since growth began Let y = amount of the growing quantity initial value 2**review: exponential growth functions**A certain species of bacteria will double in population each week in a laboratory. Suppose you initially have 25 specimensof this bacteria. Let x = number of time periods since growth began Let y = amount of the growing quantity initial value 2**review: exponential growth functions**A certain species of bacteria will double in population each week in a laboratory. Suppose you initially have 25 specimensof this bacteria. Let x = number of time periods since growth began Let y = amount of the growing quantity 2 25**review: exponential growth functions**A certain species of bacteria will double in population each week in a laboratory. Suppose you initially have 25 specimens of this bacteria. Let x = number of time periods since growth began Let y = amount of the growing quantity**interpreting a percent of increase as a growth factor**The amount of money in your savings account increased by 3% last year.**interpreting a percent of increase as a growth factor**The amount of money in your savings account increased by 3% last year. What does it mean to grow by 3%?**interpreting a percent of increase as a growth factor**The amount of money in your savings account increased by 3% last year. What does it mean to grow by 3%?**interpreting a percent of increase as a growth factor**The amount of money in your savings account increased by 3% last year. What does it mean to grow by 3%?**interpreting a percent of increase as a growth factor**The amount of money in your savings account increased by 3% last year. What does it mean to grow by 3%?**interpreting a percent of increase as a growth factor**The amount of money in your savings account increased by 3% last year. What does it mean to grow by 3%?**interpreting a percent of increase as a growth factor**The amount of money in your savings account increased by 3% last year. What does it mean to grow by 3%?**interpreting a percent of increase as a growth factor**The amount of money in your savings account increased by 3% last year. What does it mean to grow by 3%?**interpreting a percent of increase as a growth factor**The amount of money in your savings account increased by 3% last year. What does it mean to grow by 3%?**interpreting a percent of increase as a growth factor**The amount of money in your savings account increased by 3% last year. What does it mean to grow by 3%?