Exponential Functions Review

Is this exponential growth or decay?

• Growth
• Decay

Is this exponential growth or decay?

• Growth
• Decay

Is y = -5(4)^x growth or decay?

• Growth
• Decay

Is y = 54(.20)^x growth or decay?

• Growth
• Decay

• 1600

• 2

• There is not enough information to tell.

Which of the following functions shows an initial amount of $15 and an increase of 35% each year?

• y = 15(35)^x
• y = 15(1.35)^x
• y = 15(0.35)^x
• y = 35(1.15)^x

Write an equation that models the following situation:
Samantha's hair was known to grow very rapidly. It began at a length of 6 in and grew at a rate of 14% a week.

• y=6(0.14)^x
• y=6(1+14)^x
• y=6(1.14)^x
• y=6(0.86)^x

Identify the initial value:

y = 6.87 (4)^x

• a = 4

• a = 6.87

• a = 3

• a = 1

Given y=3^x determine the asymptote

• (0,1)
• (0,3)
• x=0
• y=0

What is the range of f(x) = 5^x?

• -∞ ≤ x ≤ ∞
• -∞ ≤ y ≤ ∞
• x > 0
• y > 0