Every morning Jenna runs for 15 minutes. If Jenna runs 8 miles per hour, how far does she travel? Use the equation equals rt, where d is distance, r is rate, and t is time.

Step-by-step explanation:

Question:  How far does she travel?

t=20minutes   Change this to part of an hour.     20/60 = 1/3 hour

Just set up a table:

Rate        *      Time       =      Distance

9 mi/h     *      1/3 hour=    9/1*(1/3)=    Multiply and simplify, and you have your answer.

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.