Which of the following is a quadratic function? (Mark all that apply) a
t(x)=x^2

b
f(x)=2x+20

c
c(x)=2x^3+4x^2-6
d
h(x)=x^2-12x+1

Which graph represents the solution of the inequality?

Find the cosine function that is represented in the graph.

Factor the following expression. 27y3 – 343 a. (3y + 7)(9y2 + 2ly + 49) b. (3y – 7)(9y2 + 2ly + 49) c. (3y – 7)(932 – 217 + 49) d. (3y + 7)(92 – 2ly + 49)