math
posted by sahar .
teemu's tshirts designs and manufactures tshirts for a $15 flat design rate and $7.50 for each tshirt.he wants to sell his tshirts to the senior class for their graduation party. he is going to charge them $10 for each tshirt.
write a function,c, representing the cost of,t,tshirts.
write a function,I, representing the income that teemu

Cost(t) = 7.5t + 15
Income(t) = 10t  7.5t  15
= 2.5t  15
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