15. Elena's son will enter college 16 year from now. At that time, she would like to have $20,000 available for college expenses. For that purpose, her bank will set up
an account that pay 7% compounded quarterly. If she makes payment into the
account at the end of each quarter, what must Elena's payments be to achieve her
goal?

both equations and proportions are better.

54 kilometers per hour

step-by-step explanation:

according to rules:

1 km = 1000 meter

which means that 1 meter = 1/1000 km

1 hour = 3600 second [ as 1 hour = 60 min = 60 *60 seconds ]

which means that 1 second = 1/3600 hour

therefore, 1 kilometer/hour =

thus to convert 15 meter per second to kilometer per hour, we multiply 15 to 3.6 kilometer/hour.

15 meter/second=   which is the required answer.

dont trust me im no expert these losers made me fail a test bro this sucks

step-by-step explanation: