Emery borrowed money from her brother to buy a new phone and is paying off a fixed amount each week. After 2​ weeks, she will owe​ $456, and after 5​ weeks, she will owe​ $228.
a. What was the original amount Emery​ borrowed?
b. How much does she pay each​ week?
c. How useful are equations in​ point-slope and​ slope-intercept forms for answering each​ question?



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