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?

700

1,200

75

100

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?


700



1,200



75



100

phi · Answer

If January corresponds to x = 0
any idea what x is for June ?

habbababba1 · Answer

not a clue

phi · Answer

x is the number of months elapsed.
elapsed means "passed by"
they start counting with x=0 for January.  x=1 would be February.  and so on.