Need these two questions answered for my pre-calc class. Offering more money for both of them to be answered. Thanks.

5. 4 pts. $15,000 is invested at 1 16% interest compounded monthly. Determine how long it will take before the investment reaches $20,000. 6. 3 pts. A wheel, 14 inches in diameter, is rotating at the rate of 6 revolutions per minute. What is the linear speed of a spot on the edge of the wheel, in inches per minute