Modeling Exponential Functions

Rhonda deposited $3000 in an account in the Merrick National Bank, earning 4.2% interest, compounded annually. Write an equation to find B, her account balance after t years.

Equation for doll's value increasing by 2.5% annually from $450.

A car was purchased for $25,000. Research shows that the car has an average yearly depreciation rate of 18.5%. Create a function that will determine the value, V(t), of the car t years after purchase.

Function J(t) for $900 at 2.3% interest, no deposits/withdrawals.

Function for rabbit population decreasing at 1.5% per year from 65,000.

HINT: Use your y= on the calculator to determine which one is equivalent.

What is the y-intercept of the function: $$f\left(x\right)=2\left(4\right)^x$$ ?

Growth/Decay factor of the function: $$f\left(x\right)=2\left(4\right)^x$$

What represents Growth/Decay on f(x)=a⋅b^x? Options:

x

a

b