Will give brainliestt which equation represents a line that is perpendicular to the line graphed? a) y = 3 b) x = 1 c) y = -3 d) y = 3x + 1

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?

Ijust need to see how to do this. so you don’t have to answer all of them just a step by step explanation of one.

The volume of gas a balloon can hold varies directly as the cube of its radius. imagine a balloon with a radius of 3 inches can hold 81 cubic inches of gas. how many cubic inches of gas must be released to reduce the radius down to 2 inches?