Exponential Equations Change in Time

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

• Input

• Rate of change

• Y-intercept

• Output

Write the function for the following table:

• f(x) = 5x + .08

• f(x)= 5x + 2

• f(x) = .08(5)^x

• f(x)= 2(5)^x

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

Which table represents the following equation?

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• 
• 
• 

• 9600

• 12,800

• 200

• 8000

• $ 819.20

• $ 1.4

• $ 140

• 1600

• 2

• There is not enough information to tell.

In the compound interest formula A=P(1+r)^t what does the P stand for?

• The time

• The total final amount

• The principal amount (original amount)

• The interest rate

Solve for n:
2^-2n = 2⁶

• -1

• -7

• 5

• -3

What is the y-intercept of y = 7(5/4)^x?

• (0, 7)

• (7, 0)

• (0, 5/4)

• (5/4, 0)