Question

A school orders t-shirts from terrific Ts. The total cost is made up of a set-up fee of $115 and a cost of $3 per t-shirt. Terrific Ts requires a minimum order of 25 T-shirts. The school can spend a maximum of $800. How do I Determine all the possible values of the total cost and the number of T-shirts, for this situation?

Answer 1

first let establish the eqautionlet y be the total costx is the number of orders
y = 3x + 115
since the minimum order is 25x >= 25
then The school can spend a maximum of $800
800 <= 3x + 115
800 - 115 <= 3x685 <= 3x685/3 <= x228.33 <= x