If we let x, be the total number of printed shirt to be sold then the total cost function can be written as C(x)=24,480 +120x +40x ... or C(x)=24,480+160x
to determine the number of shirt to be printed, you need to solve for x, since the initial investment is 50,000 it should be greater than the total expenses or total cost function, hence we have the inequality, 50,000>24,480+160x. this will give you 159.5>x or x<159.5, therefore the number of shirt should be less than 159 pieces.
If we let x, be the total number of printed shirt to be sold then the total cost function can be written as C(x)=24,480 +120x +40x ... or C(x)=24,480+160x
to determine the number of shirt to be printed, you need to solve for x, since the initial investment is 50,000 it should be greater than the total expenses or total cost function, hence we have the inequality, 50,000>24,480+160x. this will give you 159.5>x or x<159.5, therefore the number of shirt should be less than 159 pieces.