Find the equation of the exponential function represented by the table below:

Question

x. y

0. 5

1. 10

2. 20

3. 30

Answer 1

y = ab^x

5 = ab⁰

5 = a

y = 5b^x

10 = 5b¹

2 = b

y = 5(2)^x

Answer 2

Mark: When x = 3, your equation, y = 5(2)^x does not follow the given data.