Help plz I wanna be done with homework for the day :(

72in

Step-by-step explanation:

We need to build an equation for each one.

the rate of growth is actually the slope, and their hight is the starting point.

so Alex's is y=1/4x+60

Leo's y=1/2x+48.

y here represents their height so we need to do this:

y=y meaning

1/4x+60=1/2x+48

1/4x=12

x=48 then we replace the value of x

y=1/4x+60

=12+60

y=72in