Explanation:
let the number of cases be n
let the cost function be C(n)
the revenue function be R(n)
the profit function be P(n)
a. the cost for the week will be
C(n)= 175+2n
b. the cost of a case is $27
the revenue is
R(n)=27n
c. the profit is expressed as revenue - cost
P(n)= R(n)-C(n)
P(n)= 27n-(175+2n)
P(n)= 27n-175-2n
P(n)= 27n-2n-175
P(n)= 25n-175
d. break even point is the point at which total cost and total revenue are equal
C(n)=R(n
175+2n=27n
solving for n we have
175=27n-2n
175=25n
n=175/25
n=7