You add 70 + 50 then you multiply it by 7.5 and you get, 900 gallons.
Answer:

Step-by-step explanation:
Isosceles triangles will always tell you what you need to know. All angles are congruent, therefore all edges are congruent. ♂️
I am joyous to assist you at any time.
The answer is 3.42 x 10^6 because we moved the decimal 6 places to the left. Hope this helps:)
~Ash