Question

make x the subject d =l/a(x+(m-1)d)

Answer 1

Answer:

This is the compound interest formula. You use it to determine by how much a given amount will grow, at a given interest rate, if invested for a certain period of time. The formula is based on the assumption that interest earned is reinvested, i.e. the interest earned is added to the original amount and then earns further interest.

The variables are as follows:

A = final amount

P = Principal amount, i.e. the amount you invest

r = the interest rate at which the principal amount grows, expressed as a decimal, eg 5% = 0.05

n = number of times interest is compounded annually, eg. monthly compounding would mean n = 12, since there are 12 months in a year, quarterly is 3, etc.

t = number of years.