Pls help 20 points which could be the cross section of a square pyramid select all that apply

triangle
trapezoid
pentagon
square
circle

What is the expression in factored form? 225x^2 - 144 a. 9(5x+4)^2 b. 9(5x-4)^2 c. 9(4x+5)(4x-5) d. 9(5x+4)(5x-4)

The graph of a function f(x)=(x+2)(x-4). which describes all of the values for which the graph is negative and increasing? all real values of x where x< -2 all real values of x where -2

Find the domain and range of the following function f(x) = 51x - 21+ 4