SOLUTION: Tom borrows $400 from his parents.He plans to pay them a fixed amount each week. The amount still owing is modeled by the equation A= 400-5n, where n represents the numbers of week

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Question 949126: Tom borrows $400 from his parents.He plans to pay them a fixed amount each week. The amount still owing is modeled by the equation A= 400-5n, where n represents the numbers of weeks since tom borrowed the money.
How many week will it take Tom to pay off the loan?

Answer by macston(5194) About Me  (Show Source):
You can put this solution on YOUR website!
The loan will be paid off when A=0
0=400-5n Add 5n to each side
5n=400 divide each side by 5
n=80 weeks ANSWER: It will take Tom 80 weeks to pay off the loan.