Which of the following statements correctly illustrate the addition property of equality?

check all of the boxes that apply.

if a = b, then a + c = b + c.

if x = y, then x + 2 = y- 2.

if w + 2 = 7, then w + 2-2 = 7- 2.

if z-mr001-1.jpg=9,then z-mr001-2.jpg+mr001-3.jpg=9-mr001-4 .jpg.

The answer is:

A) If a = b, then a + c = b + c.

and C) If w + 2 = 7, then w + 2-2 = 7- 2.

a

step-by-step explanation:

the answer is a

constant of proportionality = 3 and the equation is c = 3p.

step-by-step explanation:

c = kp   where c = amount of caffeine in mg., p = oz of pepsi and k is the constant of proportionality.

substituting the values given:

24 = 8k

k = 3.

the same value of k will be obtained if we substitute the other given values.