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

Question

x. y

0. 0.2

1. 0.4

2 0.8

3. 1.6

Answer 1

The general form of the equation is

y=a(b)^x

a is the initial value = 0.2

b is the rate of increase or decrease = 2 (the values are doubling

y = 0.2(2)^x