A=PMT(((1+r/m)^mt-1)/(r/m)) - ANSWER-Payments to save money up
total return - ANSWER-(A/P)^1/y-1
A=PMT((1-(1+(r/m)^-mt)/(r/m)) - ANSWER-Paying money off
(new-old)/old - ANSWER-percent change
1x+rx=total tax - ANSWER-calculating taxes
CPI (Consumer Price Index) - ANSWER-(old/new)today's price=price in past dollars
"compounded continuously" - ANSWER-A=Pe^rt
"compounded monthly" - ANSWER-A=P(1+(r/m))^mt
"simple interest rate" - ANSWER-A=P(1+rt)
"How much should you invest each month..." - ANSWER-A=PMT((1+(r/m)^mt-1)/(r/m))
"How much money should you invest now at r% compounded quarterly..." - ANSWER-
A=P(1+(r/m))^mt
How long will it take to double an investment if it's placed in an account maying r%
compounded quarterly..." - ANSWER-A=P(1+(r/m))^mt
Suppose you buy a car and finance $x. If the interest rate is r% and you do a y year
loan, what will your monthly payments be? - ANSWER-A=PMT(1-(1+(r/m))^-mt/(r/m))
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