Martha (from problem 9) has some expenses each week. Each week she buys $9.72 worth of
supplies to help her in her business. Assuming she starts with a zero balance, what would the balance be
in her account after three weeks?
if Martha is not earning money to pay it back, it would be negative. Each week, she loses -9.72 dollars. so -9.72 x 3 weeks = your problem. I'll let you take it from there and solve the rest
