Question

The volume (V) of water stored in an open tank varies due to evaporation as
V = x4 − 50x2 + 700, where V is expressed in gallons and x is the number of months elapsed. If January corresponds to x = 0, what will the volume of water (in gallons) in the tank be in June?
A. 700
B.1,200
C.75
D.100

Answer 1

January corresponds to x = 0
February corresponds to x = 1, and so on, until we get

June corresponds to x = 5

if V = x^4 -50x^2 + 700, then what does V equal when x = 5?

Answer 2

I don't understand it. What's the answer ?