Use logarithms to solve the problem. How long will it take an investment of $7000 to triple if the investment earns interest at the rate of 4%/year compounded daily? (Round your answer to two decimal places.) yr

(Solving for n with nonannual periods) About how many years would it take for your investment to grow twofold if it were invested at an APR of 14 percent compounded weekly? If you invest $1 at an APR of 14 percent compounded weekly, about how many years would it take for your investment to grow twofold to $2? years (Round to the nearest whole number.)

(Solving for n with nonannual periods) About how many years would it take for your investment to grow threefold if it were invested at an APR of 11 percent compounded annually? If you invest $1 at an APR of 11 percent compounded annually, about how many years would it take for your investment to grow threefold to S3? lyears (Round to the nearest whole number.)

You have $76,000 in your account that you want to grow to triple that amount in 25 years. What annual rate of return is necessary to reach your goal? (Note: Enter your answer is a decimal, not a percentage. For example, enter .0452 instead of 4.52%) Your Answer: Answer

How long does it take for an investment to double in value if it is invested at 5% compounded continuously? ... At 5% compounded continuously, the investment doubles in about years. (Round to two decimal places as needed.)

Using the rule of 72, approximately how many years are needed to double a $100 investment when interest rates are 5.25 percent per year? (Round your answer to 2 decimal places.)

can somebody help me？ thanks   K means compound k times a year.

How long (in years) would $200 have to be invested at 6%, compounded continuously, to amount to $920? (Round your answer to the nearest whole number.) yr

How much invested now at i= 7% would be enough to provide three payments, with the first payment in the amount of $8400 occurring two years hence (count from time zero), then $6800 five years hence (count from time zero), $5000 seven years hence (count from time zero)? (Please keep the integer)

How long will it take for a some of money to double if it is invested at 5% interest compounded annually?