Help me with 5, 6, and 7 please

Ineed to know the answer to this algebra question.

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

(c) a vine called the mile-a-minute weed is known for growing at a very fast rate. it can grow up to 0.5 ft per day. how fast in inches per hour can the mile-a-minute weed grow up to? show your work using the correct conversion factors.