What is the factorization of the trinomial below? 3x^2+36x+81
A. (x+2)(x+27)
B. (x+3)(x+9)
C. 3(x+2)(x+9)
D. 3(x+3)(x+9)

On a string instrument, the length of a string varies inversely as the frequency of its vibrations. an 11-inch string has a frequency of 400 cylces per second. find the frequency of a 10-icnch string.

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 4x^2 - 19x- 5

Cone a has a surface area of 384 ft2 and cone b has a surface area of 96 ft? . what is the ratio of their volume?