Growth or Decay Story Problem

Pick the equation that is exponential growth

• y=2(0.5)^x

• y = 0.5(2)^x

Does the table show exponential growth or decay?

• Growth

• Decay

Which equation is representative of the graph?

• Exponential growth

• Exponential decay

Which equation is representative of the graph?

• Exponential growth

• Exponential decay

Which of the following is an example of exponential growth?

• y = 8(1.05)^t

• y = 8(.95)^t

• y = (.99)^t

• y = 9(1 - .5)^t

Which of the following models represents exponential decay?

• y = 5(1 + .05)^t

• y = 5(1 - .05)^t

• y = .8(1 + .05)^t

• y = -2(1 + .05)^t

Which of the following models represents exponential growth?

• y = 4(1 + .08)^t

• y = 4(1 - .08)^t

• y = .5(1 - .08)^t

• y = 11(1 - .08)^t

Which of the following is an example of exponential decay?

• y = 8(1.05)^t

• y = .8(1.05)^t

• y = 1.8(1.05)^t

• y = 8(.95)^t

A particular type of cell triples in number every hour. Which function can be used to find the number of cells present at the end of h hours if there are initially 6 of these cells?

• f(h) = 3(6)^h

• f(h) = 6x^h

• f(h) = 6(3)^h

• f(h) = 3(6h)

Suppose a culture of bacteria begins with 5000 cells and dies by 30% each year. Write an equation that represents this situation.

• y=5000(0.7)^x

• y=30(5000)^x

• y=5000(1.3)^x

• y=5000x^x