What is the justification for the step taken from line 2 to line 3?

3x +9-7X=X+10+X

-4x+9 = 2x+10

-6x+9= 10

-6x=1

x = 6 음

(A) the subtraction property of equality

(B) the multiplication property of equality

(C) combining like terms on one side of the equation

(D) the distributive property

Submit

(A) the subtraction property of equality

Step-by-step explanation:

Given

The steps in the question

Require

Justify step 2 to 3

Write out step 2:

Apply subtraction property by subtracting 2x from both sides

Notice that the above equation is represented in step 3.

Hence, option A answers the question.

part a

in a city ice cream is mostly only bought when the temperature is very high as ice cream cools down our

so we can derive the conclusion that as the temperature increases the number of ice creams sold also increases

part b

y intercept is 5

slope is 2

happy to

pls mark as brainliest

answer: it's d

step-by-step explanation: