Answer:
40 shirts.
Explanation:
The budget is $170.
There's a one time fee of $10.
A T-shirt costs $4.
Put that in an equation with x, where x is the amount of t-shirts that can be made, to solve for it.
170 - (4x + 10) = 0
170 = 4x + 10
-10
160 = 4x
/4
40 = x
So, 40 shirts can be made at most.