Find the value of "c" that makes x^2+ 12+ c

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 9 + 12x + 4x^2

Factor the polynomial by its greatest common monomial factor.

When a 757 passenger jet begins its descent to the ronald reagan national airport in washington, d.c., it is 3900 feet from the ground. its angle of descent is 6 degrees. how far must the plane fly to reach the run way? a. 37,106 ft b. 37,310.4 ft c. 23,456.6 ft d 2,492.7 ft