# Algebra 2 math help ten points to whoever helps me thanks?

What is the axis of symmetry of the graph of y = -2x^2-5x + 7 a x=-5/4 b x=-2/7 c x=5 d x=7 What are the coordinates of the vertex of y = x^2-2x-7 a -1,-7 b -1,-4 c 1,-8 d 1,-7 Which quadratic function has vertex (-1, 3) and passes through the point (3, 15)? a f(x)=15/16(x+1)^2+3 b... show more What is the axis of symmetry of the graph of y = -2x^2-5x + 7
a x=-5/4
b x=-2/7
c x=5
d x=7

What are the coordinates of the vertex of y = x^2-2x-7
a -1,-7
b -1,-4
c 1,-8
d 1,-7

Which quadratic function has vertex (-1, 3) and passes through the point (3, 15)?
a f(x)=15/16(x+1)^2+3
b f(x)=3/4(x+1)^2+3
c f(x)=3(x+1)^2+3
d f(x)=5(x+1)^2+3

What is y = x^2 -16x + 40 written in vertex form
y = (x- 8)^2 -24

y = (x -8)^2 + 48

y = (x -16)2 + 40

y = (x -16)2 + 64

Solve 2x^2 + 4x +10 = 0 using the quadratic formula. What is the solution set?
{i,-3i}

{-1 + 2i,-1 -2i}

{-2 + 4i,-2 -4i}

{-4 + 8i,-4 -8i}

A quadratic equation has a discriminant of 14. Which describes the number and type of solutions of the equation?

1 real solution

2 real solutions

2 complex solutions

1 real solution and 1 complex solution

An open box is formed by cutting squares with side lengths of 4 inches from each corner of a square piece of paper. What is a side length of the original paper if the box has a volume of 784 cubic inches?

26 inches

22 inches

18 inches

14 inches

12. The weekly cost (C) of growing and selling x acres of flowers is approximated by C = 0.2x^2 -12x + 240. How many acres of flowers would minimize these costs?

10 acres

20 acres

30 acres

60 acres