I need *actual* help with this. I am looking for someone who will give a step-by-step explanation and answer to this, and not just the answer. This question has confused me for a day and a half, and I have to explain it step-by-step to my parents. Please only respond if you completely understand it and can explain it to me using basic vocabulary and functions from Algebra 1.

-
Enrollment in a school has grown exponentially since the school opened. A graph depicting this growth is shown. Determine the percentage rate of growth.

An exponential graph has Time in Years on the x-axis and Enrollments on the y-axis. A curve that rises from left to right begins at (0,30) and passes through (20,80).
Is the percentage rate of growth:

0.6%
6%
0.06%
1.06%