To solve each problem, refer to the formulas for compound interest. A = P (1 + r/n)^tn and A = Pe^rt At what interest rate, to the nearest hundredth of a percent, will $16,000 grow to $20,000 if invested for 7.25 yr and interest is compounded quarterly?

Find ƒ^-1(x), and give the domain and range. ƒ(x) = e^x-5

Find ƒ^-1(x), and give the domain and range. ƒ(x) = e^x + 10

Use a calculator to find an approximation to four decimal places for each logarithm. ln 144,000

Use a calculator to find an approximation to four decimal places for each logarithm. log_2/3 5/8