The equation, and explanation.

Simplify a7/a4 a) 1/a3 b)-a/a2 c)a4/a3 d)a3

The focus of parabola is (-4, -5), and its directrix is y= -1. fill in the missing terms and signs in parabolas equation in standard form

At 6 1/2 cents per pound of string beans how much does 7 pounds cost