Acyclist rides her bike at a rate of 12 meters per second. what is this rate in kilometers per hour? how many kilometers will the cyclist travel in 3 hours? do not round your answers.

Part 1) The rate is

Part 2)

Step-by-step explanation:

Part 1)

we know that

A cyclist rides her bike at a rate of 12 meters per second

Remember that

1 hour=3,600 seconds

1 kilometer=1,000 meters

therefore

Part 2) How many kilometers will the cyclist travel in 3 hours?

using proportion

$25

step-by-step explanation:

25 - 4.50 = 20.5

20.5 / 2 = 10.25

10.25 + 10 = 20.25

20.25 - 12.50 = 7.75

therefore the answer is $25 as shown as the first number.