Which algebraic expression is equivalent to the one below? 9(3x + 6) a. 27x + 54 b. 27x + 6 c. 81x d. 9x + 9

Evaluate the expression for the given value of the variable 7a - 4a for a =8

When solving this problem: 3025/5.5 = a/90.75 you get 49912.5 which would be the length of one of the sides of a square when the area is only 90.75 inches. is that answer correct, why, and how is it possible?

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?