Evaluate 2d + 3 when d = 8

What is the exact volume of the cylinder (radius 13 in., height 30 in.)

Evaluate each expression. determine if the final simplified form of the expression is positive or negative -42 (-4)2 42

Sophia wrote an equation to represent the revenue of a movie theater for one day. she let x represent the number of child tickets sold and y represents the nunver of adult tickets sold. if a child ticket cost $4, an adult ticket cost $6, and the total revenue for the daybwas $420, which equation could sophia use to represent the number of chikd and adult tickets that were sold?