You helped a friend move a short distance recently. The friend rented a
truck for $15 an hour and rented a dolly for $5. Your friend paid a total of $80 for the
rental. For how long did your friend rent the truck?

5 hours

Step-by-step explanation:

if it is 15 an hour in total for the truck and dolly is 5 baseline then 15*5=75+5=80

the answer is c just got it on ed

step-by-step explanation:

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.