Sandy and her three friends are going to the movies. Each person will buy a ticket for $5 and a popcorn for $2. If Sandy is being nice and wants to pay for all of her friends, what is the total she will pay?

5+2=7

7*4=28

sandy will pay $28

step-by-step explanation: yes

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.