Where’s the angle? Is there a picture of it?
Answer:

Step-by-step explanation:
Since ∆EGF is similar to ∆HGI, therefore, the ratio of their corresponding side lengths are the same.
Thus, FG:GI = EG:GH
FG = x + 4
GI = 30
EG = 12
GH = 20


Cross multiply


Subtract 80 from both sides


Divide both sides by 20


4 x 5 - 3
= 20-3
=17<answer
Multiply 0.26 by 520 to get 135.2 gallons