4 ( x2 + 1 /x 2 ) – ( x + 1/ ) = 60

Two streets intersect at a 30- degree angle. at the intersection, the are four crosswalks formed that are the same length. what type of quadrilateral is formed by the crosswalks?

Find the commission on a $590.00 sale if the commission is 15%.

Lola says these two expressions have the same value. expression a expression b which explains whether lola is correct?