Answer:
12.4
Step-by-step explanation:
rounded to 1dp
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It's already a square; we don't need to add anything to complete the square.

That's a vertex at x = -1. The corresponding y is y=0.
Answer: Vertex at (-1,0)
As for the other questions cut off there, the axis is the vertical line x = -1 and the range is y ≥ 0.
Allison worked 40 regular hours and 8 overtime hours.
8*15*1.5=180