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How long (in years) will it take to quadruple an investment made at a 7% interest rate ifthe interest is compounded monthly? Round to the nearest hundredth of a year. The investment will quadruple after approximately D years. \fSolve. 9 = 2()- 3 If the answer is not an integer, enter it as a decimal rounded to the nearest hundredth, if needed.Solve. log, (x - 6) + log, (x + 6) = 6 If there are multiple solutions, separate the answers with commas (,). If there is no real solution, enter "none".Solve. 2597-9 - 6256+1 T =