Answer:
![p = 4h](https://img.qammunity.org/2023/formulas/mathematics/high-school/wmutcnevgz3tj36cxrwfvqntxt3sqp4blc.png)
Explanation:
The equation of straight line is given by:
![y = mx](https://img.qammunity.org/2023/formulas/mathematics/high-school/afaxebzaoyj7fppg97yp33o61ucfwxnd3t.png)
where, m is the slope or rate of the line.
As per the statement:
Wangari plants 12 trees every 3 hours.
By definition of unit rate:
Unit rate per hour
trees
⇒
![m = 4](https://img.qammunity.org/2023/formulas/mathematics/college/buo1exabpyssyv9g4do5ve9jpzugn3sju2.png)
We have to find an equation that relates the number of trees Wangari plants (p) and the time she spends planting them (h) in hours.
then;
![p=4h](https://img.qammunity.org/2023/formulas/mathematics/high-school/rk5dq9w74tlm8x742at5kgz9xsol3kq30o.png)
where, p represents the plant trees and the time she spends planting them in h hours
Therefore,
an equation that relates the number of trees Wangari plants (p) and the time she spends planting them (h) in hours.
Credit Answers to: OrethaWilkison