1) 3x + y = 12
How do you do this?

y=-3x+12

Step-by-step explanation:

3x+y=12

y=-3x+12

y=-3x+12

a is the correct

answer: (c) m∠qpo + (2x + 16)° = 180°

step-by-step explanation:

the opposite angles of a quadrilateral are supplementary.

so, ∠o + ∠q = 180°   and   ∠p + ∠r = 180°

since ∠r = 2x + 16°, we can use substitution as follows:

∠p + ∠r = 180°

∠p + (2x + 16)° = 180°