Question

What is the rate of change of the average height in feet of the trees with respect to the number of years since the trees were planted? *

average tree height
numbers of years trees were planted 1,3,6,11,15
average height 10,24,45,80,108

3 ft/yr
7 ft/yr
10 ft/yr
14 ft/yr

Answer 1

If you plot the points you can drop a triangle to find the rise and run and slope is rise/run
also
rate of change = (y2-y1)/(x2-x1)
(1,10) (3,24)
(x1,y1) (x2,y2)
= (24-10)/(3-1)
and the answer is in the list of answers : )

Answer 2

The answer is 7