Answer:
v: (70, 15950)
Step-by-step explanation:
P= -1/2s^2 +280s-1200
this is in standard form: ax^2+bx+c
x=-b/2(a)
x=-(280)/2(-1/2)=
x=70
substitute x back in the equation to find your y coordinate for the vertex
P= -1/2(70)^2+280(70)-1200
P= 15950
