One of the steps rob used to solve an equation is shown below.

-5(3x + 7) = 10

-15x + -35 = 10

a: rob added -5 and 3x to eliminate the parentheses. this procedure is justified by the associative property.

b: rob added -5 and 3x to eliminate the parentheses. this procedure is justified by the distributive property.

c: rob multiplied 3x and 7 by -5 to eliminate the parentheses. this procedure is justified by the associative property.

d: rob multiplied 3x and 7 by -5 to eliminate the parentheses. this procedure is justified by the distributive property.

D

Step-by-step explanation:

Let's review the distributive property.

It is

a(b+c) = ab + ac

Whenever we have a sum/difference multiplied by a number upfront, we need to eliminate the parenthesis. We do it by multiplying the constant with the terms of the sum/difference inside the parenthesis, each respectively.

Looking at 2 steps, we see Rob:

From the answer choices, D is right.

3< x< 5

step-by-step explanation:

|x - 4| < 1

there are two solutions, one positive and one negative.   remember to flip the inequality when taking the negative solution

x-4 < 1       x-4 > -1

add 4 to each side

x-4+4 < 1+4       x-4+4 > -1+4

x< 5                 x> 3

3< x< 5