Exponents and Growth and Decay

What is the decay rate in the following model?
A=1200(.85)⁶

• -1200

• -.15

• 6

• -6

James' 70 in. giant peach doubles in size every week. Write an expression that would represent how big the peach is after 5 weeks.

• 70(2)³⁵

• 70(2)⁵

• 2(70)⁵

• 5(70)²

What is the horizontal asymptote of the exponential function?

• y=-3

• x=-3

• y=1

• x=1

Identify the domain of this exponential function?

• All real numbers

• All real number greater than or equal to 0

• All real numbers greater than 0

• All real numbers less than or equal to 1

Which of the graphs below represents y = 6(2)^x?

• 
• 
• 
• 

Find the decay factor from the given graph.

If the decay rate is 20%, which of the following represent the decay factor?

• 0.2

• 0.8

• 1.2

• 1.8

If the growth rate is 80%, what is the growth factor?

• 0.2

• 0.8

• 1.2

• 1.8

A flea medicine breaks down at a rate of 20% per hour. This is the rate of decay of the medicine. The initial dose is 60 milligrams. Which of the following represent the equation the models the amount of flea medicine left in an animal?

The value of a car depreciates exponentially. Identify the decay factor is the car was worth $20,000 initially and worth $15,000 after 1 year.

• 1.33

• 0.75

• 0.66

• 0.25