question/answer choices in attachment, im very clueless on how to figure out this and the answer.

The function ƒ is defined by ƒ(x) = (x + 3)(x + 1). the graph of ƒ in the xy-plane is a parabola. which interval contains the x-coordinate of the vertex of the graph of ƒ?

Josephine has a great garden with and area of 2x2 + x - 6 square feet

In which form is the following function written? y = - 2(x – 3)(x + 5)