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46. A couple invests $2,500 in a CD that earns 2.25% compounded quarterly. How much will they have in 3 years? 47. A T-bill is worth $5,000 in 1 year. How much should you be willing to pay for it now if you would like to have an annual rate of 4.16% compounded weekly? 48. You have invested $3300 in the stock market and have a return of $4000 after 3 years. What annual interest rate compounded annually did your investment earn? Express your answer as a percent correct to three decimal places. 49. Rebecca wants to buy a car that costs $15,000. She already has $13,000. If she invests this at an annual rate of 6.1% compounded monthly, how long will she need to invest until she has enough for the car? Round to the next month. 50. Bank A offers a loan rate of 7% compounded daily, whilst Bank B offers a rate of 9% compounded weekly. Which loan would be cheaper to take if the amount borrowed is $10,000 over a 5 year period