Exponential Functions and Word Problems

Which equation matches the graph?

• y = 2^x+3

• y = 2^x + 3

• y = 2^x

• y = 2^-x

What is the range of y=2^x+1-3?

• (-∞,∞)

• (-3, ∞)

• (-1, ∞)

• (-∞, -3)

What type of pattern do exponential functions have?

• Adds by the same number every time

• Multiplies by the same number every time

• Square roots all the inputs

• Squares all the inputs

Describe the function.

• Exponential Growth

• Exponential Deacy

• Positive Linear

Describe the function.

• Exponential Growth

• Exponential Decay

• Quadratic

What is the initial quantity?

P = 8(1.23)^t

Is the function growth or decay?

Check the box:

• Growth

• Decay

You buy a car for $8000 that depreciates at a rate of 11% a year. How much is the car worth after 5 years?

Round to the nearest cent. (two decimal places)

• Because the 0.25 was bigger than one

• Because the 1.3 was bigger than one

• Because the 0.25 was less than one

• Because the 1.3 was less than one

The mice population is 20,000 and is decreasing by 15% each year. How many mice are left after 10 years?

• 3937 mice

• 80, 911 mice

• 0.000115 mice

• 4117 mice