Expert Answer 100 1 rating Previous question Next question Transcribed Image Text from this Question. Calculate time solve for t. Your annual interest rate is 625.
With a bit of algebra we get.
One very important exponential equation is the compound-interest formulawhere A is the ending amount P is the beginning amount or principal r is the interest rate expressed as a decimal n is the number of compoundings a year and t is the total number of yearsRegarding the variables n refers to the number of compoundings in any one year not to the total number of. R r 100. You want to know the annual return or interest rate you revieved on investment you made 2 12 years ago 30 months ago of 50000 that is now worth 58400. A P1rnnt A is the future amount P is the present amount r is the annual interest rate.