Intro to Exponential Function

What is the initial value of the situation represented by f(x)=0.05(2)^x?

• 0.05

• 2

• 0.1

• 1

What is the growth/decay factor of the situation represented by f(x)=10(0.3)^x?

• 10

• 0.3

• 1

• 3

Identify the growth/decay factor of the function f(x)=2(4)^x.

• 2

• 4

• (2)^x

• 8

Identify the initial value:

y = 6.87 (4)^x

• a = 4

• a = 6.87

• a = 3

• a = 1

The function y = 125(1.13)^x represents Mr. Gantz's recent investments where x is measured in years.

Which statement is NOT true?

• Mr. Gantz initial invested $125

• Mr. Gantz's money grows by 13% per year

• After 4 years Mr. Gantz will have about $203.81

• Mr. Gantz earns more money in year one than in year 5

Which graph is an exponential function?

• red

• blue

• green

• none

• 
• 
• 
• 

• 96

• 7776

• 30

Evaluate for x = 6

• 355.37

• 3.7

• 47.51

• 6

Which of the following is an exponential growth function whose initial value is 50?

• y = 50(.05)^x

• y = 50x - 4

• y = (2)^x + 50

• y = 50(1.4)^x