I think it might be B
because from 9+1 = 10 we can change to 9=10-1
and 10+6=16 no need to change
then we solve the problem with the equation
16 - 9
10+6 - (10-1)
10+6-10+1
7
thats the answer
Answer:
-3, 5/2
Step-by-step explanation:
What are the roots of the function y = 4x2 + 2x – 30?
To find the roots of the function, set y = 0. The equation is 0 = 4x2 + 2x – 30.
Factor out the GCF of : 2, so the equation becomes 0 = 2(2x2+x-15)
Next, factor the trinomial completely. The equation becomes: 0=2(x+3)(2x-5)
Use the zero product property and set each factor equal to zero and solve.
x+3=0 2x-5 = 0
x = -3, 5/2
The roots of the function are -3, 5/2.
Hope this helped!
Manipulate the equation to get it in one of the following forms:

or

Subtract 3y from both sides of the equation:
Divide by 6 on both sides of the equation (reduce):

This is a parabola that opens down and the value of p =

.
The vertex is at the origin (0, 0)
Focus: (0, 0 + p) ⇒

Directrix: y = 0 - p ⇒

Axis of Symmetry: x = 0
If we plug in x, we should be able to find y because then there's only 1 unknown value in the equation.
y=8-2x
y=8-2(8)
y=8-16
y=-8