Which is a greater gas mileage to 210 miles for 8.5 gallons of gas or 336 miles for 12 gallons of gas

What is the solution set of the quadratic inequality x^2-5< or equal to 0

Aquadrilateral has exactly 3 congruent sides davis claims that the figure must be a rectangle why is his claim incorrect.

Parabolas y=−2x^2 and y=2x^2+k intersect at points a and b that are in the third and the fourth quadrants respectively. find k if length of the segment ab is 5.