I Question Details
John did an experiment pulling marbles out of a bag,
without knowing the contents of the bag, After
performing 20 trials, John had pulled 3 red marbles, 11
blue marbles, and 6 orange marbles, How many orange
marbles could he expect to pull if he performed a new
trial with a total of 1,000 trials?
0.3

4a. is 3 miles every hour

4b. is 1/3 of an hour per mile

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.