For this case we have the following variables:
x: number of months
f (x): number of caps sold
The function that models the problem is given by:

By the time the store sells 64 caps we have:

From here, we clear the number of months:

Answer:
the store sells 64 caps in 3 monts
A. month 3
Answer:
n = 5
Step-by-step explanation:
Isolate the variable by dividing each side by factors that don't contain the variable.
2x + 37
X 1 for Omar
x 2 for Deb
and deb has an additional 37