Yx 6 for y = 2/3? i don't understand algebra

Joe has a rectangular chicken coop. the length of the coop is 4 feet less than twice the width. the area of the chicken coop is 510 square feet. what is the length of the chicken coup?

The complement of an angle is one-sixth the measure of the supplement of the angle. what is the measure of the complement angle?

Abowl contained 270 starbursts of all different colors. if the probability of picking a yellow is 1/9, then how many yellow starbursts are in the bowl ? ?