SOLUTION: Trendy T-shirts has decided to make a new design. It will cost $400 plus $3 per shirt to produce them, and Trendy plans to spend $5000 on advertising. The shirts will sell for $12

Question 1047991: Trendy T-shirts has decided to make a new design. It will cost $400 plus $3 per shirt to produce them, and Trendy plans to spend $5000 on advertising. The shirts will sell for $12 each.
1) How many shirts must be sold to break even (total cost equals income from sales)?
2) What is Trendy's income (or total cost) for that many shirts?
400+3x=5000+12x
-4600=9x
511=x
Please help this seems wrong but I don't know how to set up
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!
Total cost equals income from sales
400+3x+5000=12x
5400 = 9x
x =600, How many shirts must be sold to break even
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2) What is Trendy's income (or total cost) for that many shirts?
Profit: zero (break even)
Total cost or Income from 600 Sales: $7200
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