Write the standard form of the equation of the parabola that has a vertex at (−23,19)
and passes through the point (1, -4).
Select one:
a. f(x)=−375(x−23)2−19
b. f(x)=−375(x+23)2+19
c. f(x)=−3725(x+23)2+19
d. f(x)=−3725(x−32)2+19

Aman steps out of a plane at a height of 4,000m above the ground falls 2,000m very quickly and then opens his parachute and slowly falls the remaining 2000m to the ground what height above the ground would be the best choice for a reference point

Enter numbers to write 0.000328 0.000328 in scientific notation. 1 1 0.000328=3.28 × 0 . 000328 = 3 . 28 × =3.28×10 = 3 . 28 × 10

Varies inversely with x. if y=8.5 when x=-1 find x when y=-1