N = # pounds
$1.65 = price per pound
grapes cost

When you multiply cost/pound by the number of pounds, the result is the cost for however much of the grapes Ryan buys.
Therefore,
m = 1.65n
Explanation:
In each stanza, every other line rhymes (which gives us a Rhyme Scheme of ABAB CDCD EFEF GDGD)
The things that Michelle gave up from her decision are called the costs. When you give up something, it serves as the payment in order to obtain something more beneficial. And that payment is the cost. Benefits, on the other hand, is an advantage that you earn from doing something.