Exponents Exponential Functions

Simplify:

Pick the equation that is exponential decay

• y=2000(0.88)

• y=0.5(1.88)

Is this exponential growth or decay?

• Growth

• Decay

What type of function is the function above ?

• Exponential Growth

• Linear

• Exponential Decay

• None of the Above

What is the y-intercept of the function?

• 2

• 3

• 1

• -2

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

The amount of ants in a colony, f, that is decaying can be modeled by                      f(x) = 800(.87)^x, where x is the number of days since the decay started. By what percentage is the colony decaying?

• 87%

• 13%

• 800%

• 8.7%

Simplify using exponents' Law:

Find k and c

• c = 10, k = 5

• c = -10, k = 5

• c = 5, k = -10

• c = -5, k = -10