Can someone help solve/understand this?? plz

Step-by-step explanation:

By looking at your graph, The y intercept is (0,4).

This is an exponential function so it is represented by

where a is the vertical stretched and b is the constant rate and x is the nth power.

let plug in 0,4

since anything to the 0 power is 1.

Know let plug it in to this equation.

Let use 2,1 another point on the graph

Divide 4 by both sides

take sqr root of 0.25

So

the answer is