6.2.21 Find the amount in the account for the given principal, interest rate, time, and compounding period
P = $12,000, r = 4%, t = 28 years, compounded continuously
A=s
(Type an integer or decimal rounded to the nearest cent as needed.)

At the beginning of 1974/75,2 years a man invested #2000 in a bank at 12.5% compound interest, if it degree #650 at the end of each two years to pay his son's school fees, after payment of interest to pay his son's school fees, how much did he have left at the beginning of the 1978/79 school year?

Square a has a side length of (2x-7) and square b has a side length of (-4x+18). how much bigger is the perimeter of square b than square a?and show all work! you so

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