Solve for the unknown variable. (show all work) 3x - 5 + 12x - 4x +14 = 86

Prove that quadrilateral is a rhombus.

The function below show how much jayna and hannah charge for babysitting. which statement best compares the two plants?

This is a map of the mars exploration rover opportunity predicted landing site on mars. the scale is 1cm : 9.4km. what are the approximate measures of the actual length and width of the ellipse? i mostly need to know how to set it up : )