Question

A student studies the effect of sunlight on the growth of a tree sapling. At the beginning of the student’s study, the tree sapling is

48

inches tall. The student finds that the tree sapling grows an average of

3

inches per month.


Which expression represents the height of the tree sapling after

x

months?
pls hurry, i need help asap

Answer 1

Answer: 3x+48

Reason:

The tree is already 48 inches tall. We add on 3x to represent the idea the tree is growing 3 inches per month. Therefore, the total height is 48+3x or 3x+48 inches.

Let's say x = 5 months have elapsed as an example.

The tree would have grown 3*x = 3*5 = 15 inches to get 48+15 = 63 inches tall. In other words, y = 3x+48 will have y = 63 when x = 5.