A___equation can be written in the form ax2 + b3 +c= 0 where a, b, and c are real numbers, and a is a nonzero number.

A. linear
B. quadratic
C. cubic
D. quartic

Sera sells t-shirts at the beach. she believes the price of a t-shirt and the number of t-shirts sold are related. she has been experimenting with different prices for the t-shirts. she has collected a data set with five pairs of data; each consists of the price of a t-shirt and the number of shirts sold. the independent variable, which will go on the x-axis, is . the dependent variable, which will go on the y-axis, is the