THINK IT IS 120 BECAUSE 4x30=120 so
the last part a water tank holds 5 gallons of water is not needed
Answer:

Step-by-step explanation:
To solve the expression

first we will multiply -n with each term and then find their products.
When doing multiplication the powers will be added and co-efficient will be multiplied.

Answer:
x = 92
Step-by-step explanation:

I did big side over small side, proportions.
Cross Multiply.
39x = 3,588
divide by 39x
x = 92