For the following system, use the second equation to make a substitution for y in the first equation. 2x+y=5
y+ 3 = 2x
2 x + 2 x-3 = 5
2x+ 2 x + 3 = 5
2 x + 3.2 x=5

-4, -2, 1, 4

step-by-step explanation:

domain = x values

range = y values

step-by-step explanation:

*calories burned = (weight)(calorie factor)*

calories burned = 180 (0.65)

calories burned = 117

the calories he used up is 117, which is 65% of his weight.