Quiz about Fitting Data Exponential

Question 1

Write the exponential regression equation for the data.

Accepted Answer

Y=8.16(2.7)^x

Answer

Y=81.6(2.7)^x

Answer

Y=8.16(.27)^x

Answer

Y=8.16(27)^x

Question 2

Which type of regression model does the scatter plot appear to show?

Accepted Answer

exponential

Answer

linear

Answer

quadratic

Question 3

Write the exponential regression equation for this data.

Accepted Answer

Y = 8.16(2.7)^X

Answer

Y = 81.6(2.7)^X

Answer

Y = 8.16(.27)^X

Answer

Y = 8.16(27)^X

Question 4

Accepted Answer

A, F

Answer

A, J

Answer

D, F

Answer

D, J

Question 5

What exponential equation represents the table shown.

Accepted Answer

$$y=3500(.95)^x$$

Answer

$$y=3500(1.05)^x$$

Answer

$$y=3325(1.05)^x$$

Answer

$$y=3325(.95)^x$$

Question 6

Write an equation

Accepted Answer

y = (20)0.5^x

Answer

y = (20)0.25^x

Answer

y = (0.5)20^x

Question 7

Write an equation that presents the population for any year.

Accepted Answer

y = 5(1.2)^x

Answer

y = x + 5

Answer

y = 5(1)x

Answer

y = 1.2x + 5

Question 8

Write the equation of the exponential function for the given table.

Accepted Answer

y = 2(1/3)^x

Answer

y = -2(1/3)^x

Answer

y = 1/3(2)^x

Answer

y = 2(-1/3)^x

Question 9

Write an exponential equation.

Accepted Answer

$$y=1\cdot3^x$$

Answer

$$y=1\cdot3$$

Answer

$$y=3\cdot1^x$$

Answer

$$y=0\cdot9^x$$

Question 10

Is the pictured graph growth, decay, or linear or none?

Accepted Answer

Exponential Growth

Answer

Exponential Decay

Answer

Linear

Answer

None

Question 11

What type of function is y = 7(5/4)^x?

Accepted Answer

Exponential Growth

Answer

Exponential Decay

Answer

Linear

Answer

None of the above

Question 12

A chemist has a 100-gram sample of a radioactive material. He records the amount of radioactive material every week for 6 weeks and obtains the following data: Find the exponential model of the function.

Accepted Answer

y = 100(.87)^x

Answer

y = 100(8.7)^x

Answer

y = 100(1.87)^x

Answer

y = 100(.13)^x

Question 13

What type of function is f(x)=2(1/7)^x ?

Accepted Answer

Exponential Decay

Answer

Exponential Growth

Answer

Linear

Answer

None of the Abovee

Question 14

Describe the type of function modeled by the scatter plot.

Accepted Answer

Exponential; Decay

Answer

Linear

Answer

Exponential; Growth

Answer

Linear; negative association

Fitting Data Exponential

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