(s + 3t) * (2s - 2t) = 2s^2 - 2st + 6ts - 6t^2
I would the $40-$20 and then get my answer it might be wrong so don’t get mad at me
Answer:

Step-by-step explanation:
we know that
The area of the figure is equal to the area of rectangle plus the area of semicircle
step 1
Find the area of rectangle
The area of rectangle is equal to

where

substitute

step 2
Find the area of semicircle
The area of semicircle is equal to

we have
---> the radius is half the diameter

substitute


step 3
Find the area of the figure

The greatest outputs will be by function h.
Hope this helps.