Solve each equation for the specified variable?

Which statement describes the term economics? a. it is the study of using limited resources to fulfill wants and needs. b. it is the study of how governments fulfill the wants and needs of nations. c. it is the study of how people spend their money to fulfill wants and needs.

Segment xz is bisected by point y. if xy = 12x, and the measure of xz = 18x – 6, solve for x

One line passes through (-7,-4) and (5,4) . another line passes through the point (-4,6) and (6,-9)