Answer:

Step-by-step explanation:
we know that
The perimeter of triangle is equal to the sum of the length of the three sides
Let

the formula to calculate the distance between two points is equal to
Find the distance AB

substitute in the formula
Find the distance BC

substitute in the formula
Find the distance AC

substitute in the formula
Find the perimeter


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
67+74=141
180-141=39
Your answer is 39