The time t (in years) required for an investment to double with interest compounded continuously depends on the interest In rate r according to the function r(r) = a. If an interest rate of 3.5% is secured, determine the length of time needed for an initial investment to double. Round to 1 decimal place. b. Evaluate 1(0.04), 1(0.06), and r(0.08).

The formula for interest compounded continuously is A=Pert  where P is the principal, i.e. the amount invested, r is the annual rate expressed as a decimal, and A is the amount at the end of t years.  Use this information to do the next problem. 20.  If you invest, $8950 at the annual rate of 6.75% compounded continuously, how much money will be in the account at the end of 15.75 years?

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The time, t, in years for an amount increasing at a rate of r (in decimal form) to In 2 This is called the doubling time. Find the doubling time to the nearest tenth for an investment at an interest rate of 7% = 0.07. double is given by t = In (1+r) The doubling time is years. (Round to the nearest tenth of a year.)