Algebra IM Unit 5 Practice - Exponential Functions

What is a, the starting (initial) value, for the function: f(x) = 300(1.16)^x?

• 300

• 1.16

• .16

Classify the model as Exponential GROWTH or DECAY.
 $A=1200(0.85)^x$  

• Growth

• Decay

Tags

CCSS.HSF-IF.C.8B

Classify the model as Exponential GROWTH or DECAY.

A=10(1.21)³

• Growth

• Decay

Tags

CCSS.HSF-IF.C.8B

Is this exponential growth or decay?

• Growth
• Decay

Tags

CCSS.HSF-IF.C.7E

Write an equation

• y = (20)0.25^x

• y = (20)0.5^x

Identify the y-intercept (starting value) in the function f(x)=13(.27)^x

• (.27)^x

• .27

• 13

Which equation shows the function with the greatest growth factor?

• y = 15(35)^x

• y = 15(1.35)^x

• y = 15(0.35)^x

Which of the following is an increasing exponential function whose y-intercept is 50?

• y = 50(.05)^x

• y = 50x - 4

• y = 50(1.4)^x

For which function does y increase by 35% every time x increases by 1?

• y = (1.35)^x

• y = (0.65)^x

• y = 65^x

The expression 12(1.015)^t models the population of elephants in a wildlife refuge after t years since 1975.

By what percent is the population of elephants increasing each year?

• 1.5%

• 1.015%

• 10.15%