Answer:
b
Step-by-step explanation:
-3-9 is not -6
Answer:
B
Step-by-step explanation:
I just had the same question :)
Answer:

Step-by-step explanation:
we know that
The graph of the figure represent a vertical parabola open upward
The vertex represent a minimum
The vertex of the quadratic equation is the point (h,k)
The range of the quadratic equation is the interval for y [k,∞)

Looking at the graph
The vertex is the point (0,-6)
therefore
The range is the interval [-6,∞)

Step-by-step explanation:
90+60+7x+12=180(sim of angles in a triangle)
7x+162=180
7x=180-162
7x=18
x=18/7
x=2.6
0.0 x 1 or x 0 is still 0