TEKS.MATH.9-12.VII.C

 Y varies directly with x, and y is 84 when x is 16. Which equation represents this situation?

• y=1344x
• y=100x
• y=5.25x
• y=4/21x

Tags

TEKS.MATH.9-12.VII.C

Goes through points (-2, -1) and (-3, 5)

• y = 6x + 13
• y = -6x - 13
• y = -1/6x + 1
• y = 1/6x - 1

Tags

TEKS.MATH.9-12.VII.C

A new savings account is opened with $400 and gains 3% every yr. What's the amount after 5 years?

• $415
• $463.71
• $343.49
• $460.12

Tags

TEKS.MATH.9-12.VII.C

y varies inversely as x, if y = -3 when x = -6, find y when x = 14.

• 11
• -11
• 9/7
• 7/9

Tags

TEKS.MATH.9-12.VII.C

Shawn is buying a new Jet Ski for $12,500. He is considering two credit options. Option A offers  a 6 year loan with 8.5% interest compounded quarterly, while Option B offers a 5 year loan with 10% interest compounded annually. Which is the better option and how much will he save?

• B; $573.83                  do something crazy
• B; $495.21                 get on the news
• A; $573.83                 get attention
• A; $495.21             raise money for charity

Tags

TEKS.MATH.9-12.VII.C

The following function represents a bank account. 
g(x) = 200(1.25)^x
What is the rate the bank is paying?
*Remember the rate is added or subtracted to 1 inside parenthesis*

• 200%
• 1.25%
• 25%
• 2%

Tags

TEKS.MATH.9-12.VII.C

Before a bowler rolls her first ball, 10 pins are standing. The number of pins that will be left standing, y, is a function of the number of pins she knocks down. What is the range of the function?

• {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10}
• {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}
• y ≤ 10
• 0 ≤ y ≤ 10

Tags

TEKS.MATH.9-12.VII.C

Write an equation for the following table:

• y = 4x
• y = 8x
• y = 12x
• y =¼x

Tags

TEKS.MATH.9-12.VII.C

The amount of cola in a soda machine decreases by a rate of 5% each hour. The amount of cola in the machine was originally 75 gallons.

Which function models the amount of cola in gallons after h hours?

• f(h) = 75(-5)^h

• f(h) = -5(75)^h

• f(h) = .95(75)^h

• f(h) = 75(.95)^h

Tags

TEKS.MATH.9-12.VII.C

Morales Bank offers you 3.9% interest compounded monthly. How long will it take for your money to triple if you use Morales Bank?

• 17 years and 10 months

• 28 years and 2 months

• 28 years and 3 months

• 29 years

Tags

TEKS.MATH.9-12.VII.C