The variables a, b, and c represent polynomials where a = x + 1, b = x2 + 2x − 1, and c = 2x. what is ab + c in simplest form?

Is this a polynomial function? i need to know asap

Which zero pair could be added to the function f(x) = x2 + 12x + 6 so that the function can be written in vertex form? o 3, -3o 6,629,-936, 36

Lucy is a dress maker. she sews \dfrac47 7 4 ? of a dress in \dfrac34 4 3 ? hour. lucy sews at a constant rate. at this rate, how many dresses does lucy sew in one hour? include fractions of dresses if applicable.