Answer:
b is the right answer
Step-by-step explanation:
To find the x value of the vertex we do:
x =

if your quadratic function is in the form ax² + bx + c = y
x =

x =

Now we plug this x into the equation and solve for y.
y =

y =

y =

y =

y =

y =

Your vertex (if my math is correct) is at
It would be 550x10 (5 tens = 50)
so you would solve for 550
<u> x10</u>
5500
Answer: 9 (w + 8)
Step-by-step explanation:
9/9 = 1
72/9 = 8
9 (w + 8)
-1(18+4x)=8
Then you distribute
-18-4x=8
-4x=26
X= -6.5