Question

Which exponential function is represented by the values in the table?

Answer 1

Answer: Its C.

Step-by-step explanation: Edge2020

Answer 2

Here we use the equation

$y = a(b)^x$

Taking points (0,4), (1,2)

Substituting the point (0,4) , we will get

$4 = a(b)^0 \\ 4 = a(1) \\ a =4$

Substituting (1,2) we will get

$2 = 4 (b)^1 \\ 2/4 = b \\ b = 1/2$

So we have

$a = 4, b = 1/2$

Therefore , required equation is

$y = 4(1/2)^x$