Exponential Test Review 2324 5th 7th

A table of values for the exponential function f is shown. The values represent the value of a car over a period of 5 years since it was purchased. Which exponential regression is used to determine a function?

y = ​ ​ (a)   (​ (b)   ​ )^x

• 255000
• .85
• 21675
• 1.15
• .95

A population of mutant venus fly trap plants are taking over an island in the South Pacific, capturing everything from insects to small rodents. When they were first discovered they covered 4 square kilometers. As the population grows, the plants spread and cover more land. About how many km² will be covered after 7 years?

• 132

• 145

• 157

• 7

Tags

CCSS.HSF.LE.A.2

Which expression is equivalent to (8ab⁴)(2a²b⁵)

• 10a²b⁹

• 10a³b⁹

• 16a³b⁹

• 16a²b²⁰

Tags

CCSS.HSA.APR.A.1

• None of these

The area of a rectangle is 20x⁷y⁵. If the length is 4x³y² , find the width of the rectangle.

• 16x⁴y³

• 5x⁴y³

• 5x¹⁰y⁷

• 80x¹⁰y⁷

Simplify using your exponent rule(s) (5³x²y⁴)⁰

• 5xy

• 1

• 0

• 5

Which expression is equivalent to $\frac{8x^4y^{-4}z^{-3}}{4x^2y^{-3}z^4}$  ?

•  $\frac{2x^2}{yz^7}$ 

•  $\frac{x^2yz}{2}$  

•  $\frac{2x^8y^{12}}{z^{12}}$ 

•  $\frac{yz^7}{2x^2}$  

Tags

CCSS.HSA.APR.A.1

•  5x⁵y⁵

• 2x⁵y⁴

• 10x¹¹y⁹