Gateway Review

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Gateway Review. Simplify – use your calculator. 1. answer: 8.32 2. When a = 2.1 and b = ¼ leave answer in fraction form! answer: 173/188 3. answer: -19.7. Graph in the given window.

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Gateway Review

1.

2. When a = 2.1 and b = ¼

3.

Graph in the given window
• Y = (x2+ 2) + (x -5) [-4., 2] by [-3, 4]
• Which is the best window for the equation

y =

a. Zoom decimal b. zoom standard c. zoom out

• The function y = .04x4 – 0.4x2 + 15 is w-shaped. Find a window setting that allows you to clearly see the w-shape.

Answer: something like [-5, 5] x [-10, 20]

Solve equations
• Solve for x: 5x – 12 = 3(4x +1)

answer: x = - 15/7 or - 2.142

• Solve for m:

• Solve for w:

answer: x = 41/7 or 5.85

• Solve for x: 3x + 4y = -7

y = -3/4 x – 7/4 or y = -0.75x – 1.75

K = Q = S = R?

Complete a KQSR chart to solve the following:

• After a withdrawal of \$1234, you have a bank balance of \$5678. What was the original balance?
K = Q = S = R?

Complete a KQSR chart to solve the following:

The equation C = 8.4p - 2560 represents the relationship between the cost C of manufacturing napkins and the amount of paper used to make the napkins. If the cost to make the napkins was \$123,450, how much paper was necessary?