How to convert 40m/min to km/h?

Find the difference (8ab+a+2) - (3ab+6)

Place the following steps in order to complete the square and solve the quadratic equation,

An initial investment of $100 is now valued at $150. the annual interest rate is 5%, compounded continuously. the equation 100e0.05t = 150 represents the situation, where t is the number of years the money has been invested. about how long has the money been invested? use your calculator and round to the nearest whole number. years