I don't know if u can see it, but there.
X=12
Y=15
Z=20
The answer is 29 I put it in my scientific calculator
2x2+2x-1=
4+2(-3)-1=
4+(-6)-1=
4+(-7)=
-3
Answer:
The domain is all real numbers. The range is {y|y ≤ 16}
Step-by-step explanation:
we have

This is a the equation of a vertical parabola open downward
The vertex is a maximum
The vertex is the point (-1,16)
see the attached figure
therefore
The domain of the function is all real numbers ----> interval (-∞,∞)
Te range of the function is

All real numbers less than or equal to 16 ----> interval (-∞,16]