Exponential Equations

1a. Which algae bloom covered a larger area when the chemicals were applied? A= Triangle

B= Circle

• Algae bloom A covered a larger area.

• Algae bloom B covered a larger area.

• Both algae blooms covered the same area.

• The area covered by the algae blooms cannot be determined.

2 Which algae population is decreasing more rapidly?

• Algae population A

• Algae population B

• Both populations are decreasing at the same rate

• Cannot be determined from the given information

2. What is the depreciating scale factor? Two point are given

(0,500) ( 1, 340)

• -160

• 160

• 17/25

• 8/25

The area of a sheet of paper is 100 square inches. Write an equation that gives the area, A, of the sheet of paper, in square inches, after being folded in half n times.

• A = 100 - n

The area of another sheet of paper is 200 square inches. Write an equation that gives the area, B, of this sheet of paper, in square inches, after being folded into thirds n times.

Suppose that a phone that originally sold for $800 loses 3/5 of its value each year after it is released. Explain what the numbers 800 and 3/5 mean in this situation.

Suppose that a phone that originally sold for $800 loses 3/5 of its value each year after it is released. What is the fraction to fins the total amount?

• 3/5

• 2/5

• 2400/5

• 5/3

Suppose that a phone that originally sold for $800 loses 3/5 of its value each year after it is released. how much is the phone worth after 2 years?

• 128

• 672

• 800

• 2/5

Suppose that a phone that originally sold for $800 loses 3/5 of its value each year after it is released. Write an equation for the value of the phone, p, t years after it is released.

Mike uses the equation b = 1300(2.65)^x to determine the growth of bacteria in a laboratory setting. The exponent represents

• the initial amount of bacteria

• the number of time periods

• the percent at which the bacteria are growing

• the total number of bacteria currently present