math
posted by kim .
sean is buying a player for $315. interest free payment plan. pays $25 each month.
a. how much will he owe after 1 payment? 2 payments? 3 payments?
b. use n to stand for the number of payments and a for the amount still owed. write an equation for calculating a for any value of n.
c. use your equation to make a table and graph showing the relationship between n and a.

Here is your equation, but you can do the rest.
315  n(25) = a
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