If 8y+12=36 find the value of 2y

99 points at a zoo, the leopard pen has a ring-shaped sidewalk around it. the outer edge of the sidewalk is a circle with a radius of 12 m. the inner edge of the sidewalk is a circle with a radius of 8 m. (1 point for showing all of your work) a. write and simplify an expression for the exact area of the sidewalk. (1 point for the answer) b. find the approximate area of the sidewalk. use 3.14 to approximate π. (1 point for the answer)

On an airplane there are two seats on the left side and three seats on the right side there are 90 seats o the right side of the plane

Which of the following expressions is equal to 2x^2+8