Which of the following exponential equations represents the table of values below?

Question

x y

0 -2

1 2

2 22

3 122

4 622

A)y= 5^x-3

B)y=-2^x

C)y=3^x+4

D)y=2^x+4

Answer 1

y = 5^x - 3

x = 0

y = 5⁰ - 3 = 1 - 3 = - 2

x = 1

y = 5¹ - 3 = 5 - 3 = 2

x = 2

y = 5² - 3 = 25 - 3 = 22

x = 3

y = 5³ - 3 = 125 - 3 = 122

x = 4

y = 5⁴ - 3 = 625 - 3 = 622