Exponential Functions Using Technology

A new savings account is opened with $400 and gains 3% every year. What is the exponential function?

• f(x)=400(.97)^x

• f(x)=400(1-0.03)^x

• f(x)=400(1.03)^x

• f(x)=400(0.03)^x

A new savings account is opened with $1500 and gains 1.5% annual interest. What is the exponential function?

• f(x)=1500(1+1.5)^x

• f(x)=1500(1+0.015)^x

• f(x)=1500(1.00375)^x

• f(x)=1500(1.5)^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

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

• 300

• 1.16

• .16

• x

Solve for x

• 1

• 4

• 1/2

• no solution

Solve for x

• 5/3

• 2

• 3/5

• No solution

Which function represents the table of values?

• f(x) = 4x

• f(x) = x³

• f(x) = 4^x

• f(x) = 4^x-1

• Exponential Growth

• Exponential Decay

• Linear

• None

• Exponential Growth

• Exponential Decay

What is the horizontal asymptote of all exponential functions?

• The x-axis

• The y-axis

• All real numbers