Can y’all please help

See the step-by-step

Step-by-step explanation:

Q1:

Rewrite the equation in vertex form:

y=a(x-h)^2+k

y= a(x- (-5/2)^2 + (-53/4)

The vertex is (h,k)

The vertex is( , )

To find the y-intercepts, put 0 in for y.

x^2+5x-7 isn't factorable. Use the quadratic equation.

a= 1 b= 5 c= -7

and

(,0) and (,0)

= 1.14005494,−6.14005494

Q2:

vertex: (,)

Again, use the quadratic formula.

a= -1 b=3 c= 8

or

 (,0)  (,0)

x=4.70156211,−1.70156211

the answer is 510

step-by-step explanation:

15 • 13 = 195

15 • 12 = 180

15 • 5 = 75

12 • 5 = 60

195 + 180 = 375

375 + 75 = 450

450 + 60 = 510

f(x) is the value of the function. b is the value of the function when x equals zero or the y-coordinate of the point where the line crosses the y-axis in the coordinate plane.

step-by-step explanation:

hope this !