Which function is a quadratic function?
c(x) = 6x + 3x^3
d(x) = x - 8x^4
p(x) = -5x - x^2
k(x) = 2x^2 + 9x^4

How do you determine if an ordered pair is a solution to a given equation?

Aplane intersects a pris paralel to the base of the prism. the cross section is a polygon wth eight sides. how many sides does the base of the prism have? a. 10 b. 8 c. 7 d. 9

The difference of two numbers is 40. find the numbers if 0.3 parts of one number is equal to 37.5% of the other one.