Select the correct answer. Identify the expression equivalent to 2x+8 by substituting x = 7 and x = 5.

C

Step-by-step explanation:

substitute X=7 in 2x+8, answer 22

substitute X=5, answer 18

option C

substituting X=7 in (X+4)+(X+4) also gives 22

substituting X=5 also gives 18

y≤0 

On the graph, the y-axis starts at the coordinate (0,0) and then begins to expand outward. As it expands, the domain and the range continue on forever so the answer would be y≤0 (basically, the range of the y values start from 0 and continue on to negative infinity). 

(sorry if my explanation does not make sense)