How do you find the surface area of a prism

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

What is the value of x? enter your answer in the box.

Alarger number is double the sum of a smaller number. the larger number is 2 less than 3 times the smaller number. if y represents the larger number and x represents the smaller number, which equations model the situation