Find the equation of the parabola that has zeros of x = –1 and x = 3 and a y-intercept of (0,–9). Question 10 options:

A)

y = x2 – 2x + 9

B)

y = x2 – 2x – 9

C)

y = 3x2 – 6x – 9

D)

y = 3x2 – 6x + 9

The bolo cavern outside of vandalia is 421 ft below sea level. a little more than75 miles away. mt owens is 7295 feet above sea level. what is the difference in elevation between the bolo cavern and mt owens?