Olve the system of equations.

{y=3x−7
{15x−5y=14

a. use the substitution method.

b. the solution is (15, 5)

c. the solution is (0, 7)

d. there is no solution.

e. there are an infinite number of solutions.

im pretty sure it would be 5 am, hope that , and give brainliest and guys if this is right then press the button and give 5 stars

54 km / hours

step-by-step explanation:

we need to convert seconds to hours

60 seconds = 1 minutes

60 minutes = 1hour

15 m         60 second   60 minutes

  * *         = 54000 meters/ hour

second     1 minute             1 hour

now we need to convert meters to km

1000 m = 1 km

54000 m       1 km

*   = 54 km / hours

hour               1000m