8) The quadratic function f(x)= x2 + 4x -5 has vertex at (-2,-9). 8.A) Find the y-intercept.
8.B) Graph the axis of symmetry.
8.C) Find the symmetric point of the y-intercept.
8.D) Graph the vertex and the parabola.
у
9-1
8+
7-7

51

step-by-step explanation:

73-22=51 the   mass number minus the amount of protons gives you the amount of neutrons

the ratio of grapes to blueberries she should use is 12: 3

step-by-step explanation:

if mandie is making 15 cups of fruit salad, the ratio of grapes to blueberries she should use is 12: 3.

answer: 204

step-by-step explanation:

we are told that the revenue is

x⋅(4080−10x)=−10x^2+4080x

this is a quadratic function, so to maximize it we should find the x-value of its vertex. recall that the x-value of the vertex of the parabola ax^2+bx+c is given by the formula −b/2a.

so in this case, we have a=−10 and b=4080, so the x-value of the vertex is

−b/2a= −(4080)/2(−10)=204

answer: 3.26019516

step-by-step explanation: