F(x) = −2(x − 4)^2 + 2
would the line of symmetry for this equation be x = 4 or x = -4

Apublic library wants to place 4 magazines and 9 books on each display shelf. the expression 4s+9s represents the total number of items that will be displayed on s shelves. simplify the expression

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)

Find the zeros of each function. f(x) = 6x^2 - 7x - 20