Respuesta :
Let's assume
number of T-shirts is x
Firstly , we will find cost function
Calculation of cost function:
A high school purchases a printing machine that can put lettering on clothing for $6,000
so, cost of printing machine =$6000
initial cost =6000
Each T-shirt costs the school $4
so, total cost =6000+4*x
[tex] C(x)=6000+4x [/tex]
Calculation of selling price function:
we are given
Each T-shirt costs the school will sell for $12
so,
total selling price =12x
[tex] S(x)=12x [/tex]
Break-even point:
In break-even point , selling price = cost price
so,
[tex] S(x)=C(x) [/tex]
now, we can plug value
[tex] 12x=6000+4x [/tex]
now, we can solve for x
[tex] 12x-4x=6000 [/tex]
[tex] 8x=6000 [/tex]
[tex] x=750 [/tex]
So, the number of T-shirts are 750.........Answer