Shawn is buying a new Jet Ski

for $12,500. He is considering

two credit options. Option A Offers

a 6 year loan with 8.5% interest

compounded quarterly, while

Option B offers a 5 year loan with

10% interest compounded annually.

Which is the better option and

how much will he save?

They have to let you pass middle school

So the first thing we do is to multiply the top equation by 3. the reason i want to do this is i notice there will be a 6y on both equations and can possibly add/subtract them. so we get 6y = -3x + 27. adding that and the second equation we get 6x = 27-15 which is 12. divide by 6 and we get 2. ∴ x = 2. substituting 2 into the first equation we get 2y = -2 + 9 which is 7. divide by 2 and we get 7/2. ∴ y = 7/2, x = 2.