Solve for r.

r/4
− 1
= 3

r =

What is the value of 1/3x + 7x when x = 5

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?

Can someone check if i did this correct. it’s number 4 if you’re wondering.