Whats the vertex of (0, 0) and (20, 15)

this might be little bit diffult but hope it helps :)

Step-by-step explanation:

the equation of a parabola in vertex form is

Y = a(x−h)2+k

Where the (h,k)  are the coordinates of the vertex and is a multiplier

Here (h,k) = (0,0) thus

Y = ax2

to find a subsitiude (-1, -4) into a equation

-4 = A

So y = -4x 2

So take this infomation and put it into the (0,0) and (20,15)

Hope this helps :) let me know if this isnt right

answer: she must produce at least 9,000 windows in order to make a profit of $48,000

explanation:

48,000 - 12,000 = 36,000

36,000/4 = 9,000

55

step-by-step explanation: