write the equation of a horizontal ellipse with a major axis of 30, a minor axis of 14, and a center at (-9,-7).

Step-by-step explanation:

The equation for a horizontal ellipse is:  where

Given: major axis (diameter on x) is 30 --> x-radius (a) = 15  -->  a² = 225

           minor axis (diameter on y) is 14 --> y-radius (b) = 7   --> b² = 49

           center (h, k) is (-9, -7)

Input those values into the equation for a horizontal ellipse and simplify: