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Planner

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11/26/12

Entry Task / Fact Master

INV 28 Solving Equations from Real-life Situations

Fact Master / Entry Task

11/27/12

Finish INV 28 (7-15)

Practice Handout

Fact Master / Entry Task

11/28/12

SLC Problem

Fact Master / Entry Task

11/29/12

INV 29 Intersecting Lines

11/23/12

Thanksgiving Break

Planner

Enter answer text...

11/26/12

Entry Task / Fact Master

INV 28 Solving Equations from Real-life Situations

Fact Master / Entry Task

11/27/12

Finish INV 28 (7-15)

Practice Handout

Fact Master / Entry Task

11/28/12

SLC Problem

Fact Master / Entry Task

11/29/12

INV 29 Intersecting Lines

11/23/12

Thanksgiving Break

Fact master

- Enter answer text...

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You just signed two year contract

with Verizon and bought a cell phone

for $125, and the monthly charge

will be $35 a month.

Entry Task

So far you have spent $650 on

your cell phone plan including

your phone purchase, how many

months do you have left to pay

on your contract?

Cost

= C

Months

= M

Graph the equation

C= 125 + 35M

24

-15

650= 125 + 35M

y =-1/3x

-125 -125

525 = 35m

9 months

/35 /35

15 = m

Brainstorm

INV 29 (1-8)

Intersecting Linear models

GOAL

I can find the rate of change (slope

and starting point (y-int) and use the equation

to solve a problem.

1.) Jeff's Rental service charges

$40 a day to rent a hammer drill.

Jeff's Rental service also

sells hammer drills for $360.

If someone wanted to buy a hammer drill instead of renting, how many

days would they need to use it for it to be better?

2.) Top Wash

charges $0.75

per minute.

Dan's car wash

charges $9

for a car wash.

At how many minutes will both car washes

be the same price and what will the price be?

3.) Rachael and Sabine belong to different local

gyms. Rachael pays $50 per month and no

registration fee. Sabine pays only $25 per month

but had to pay a $75 registration fee.

After how many months will Rachael and Sabine have

spent the same amount on their gym memberships

and what will their price be?

4.) Rent to Own charges

$50 plus $30 a day to rent a

video recorder.

Rent-a-Center charges $40 a

day to rent a video recorder.

At how many days will both stores

be the same price and what will the price be?

5.) John's plumbing charges $50 for

service job plus $25 an hour.

Everlast plumbing charges $35 an hour.

At which time will both companies

cost the same amount of

money and how much will it cost?

6.) Zoe is comparing two local yoga

programs. Yoga- Weigh charges $90 dollars a

month and a registration fee of $35.

Essence of Yoga charges $80 per

month with a $75 registration fee.

After how many months will the two

schools charge the same amount?

7.) Abby and Holly are playing games at the

arcade in the mall. Abby has $20 and is

playing a game that costs 50 cents per game.

Holly arrived at the arcade with $22 and is

playing a game that costs 75 cents per game.

After how many games will the two girls

have the same amount of money left?

8.) While on vacation, Selina won a lot of

tickets at two arcades on the boardwalk she

was visiting. The first arcade charges $1 to cash

in the tickets and gives you 12 cents back on

each ticket won, while the second arcade gives you

10 cents back on each ticket and no fee to cash in.

In order for Selina to make an equal profit

from each arcade, how many tickets

must she have won?