Exponential Functions Review

In an exponential function, what does the 'a' represent?

• Input

• Rate of change

• Y-intercept/Initial value

• Output

In an exponential function, what does the 'b' represent?

• Input

• Rate of change

• Y-intercept

• Output

Which equation is represented by the table?

• y = 40(2)^x

• y = 40(1/2)^x

• y = 40 - 2x

• y = 40 - 1/2x

Write the function for the following table:

• f(x)= 1(2)^x

• f(x)= 2(1)^x

• f(x) = 2x+1

• f(x)= x+2

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• 14,000 employees

• 12,386 employees

• 40,360 employees

• 15,748 employees

• $ 819.20

• $ 1.4

• $ 140

• 9600

• 12,800

• 200

• 8000

• 1600

• 2

• There is not enough information to tell.

Suppose the population of a species of insects doubles every year. There are 1600 insects initially. The function for the scenario would be?