It takes Beth 157.2 minutes to run a 13.1 mile race. If she runs at a constant pace for the entire race, how many minutes does it take her to run each mile? *

It takes 12 minutes to run each mile.

Step-by-step explanation:

Given: It takes Beth 157.2 minutes to run a 13.1 mile race.

i.e. Time taken to run 13.1 miles  = 157.2 minutes

Then, Time taken to run 1 mile =

Hence, it  takes 12 minutes to run each mile.

-8

step-by-step explanation:

option 3 . (5x + 1) - (-10x + 6)

step-by-step explanation:

option 1 :

(4x + 3) + (-9x + 4)

or 4x+3 -9x + 4

or -5x + 7

option 2

(x - 2) - (6x - 9)

or x-2-6x + 9

or -5x + 7

option 3

(5x+ + 6)

or 5x + 1 + 10x -6

or 15x -5

option 4

-4x+2x+7-3x

-7x + 2x + 7

-5x + 7

hence only option 3 did   not satisfy the given simplify expression.