Determine the constant of variation for the direct variation given. (0, 0), (3, 12), (9, 36) 3 4 12

What is the value of x? enter your answer in the box. (cm)

Fanny mendelssohn manages all the magazines and paperback books at a local grocery store. she prices many paperbacks to sell at $7.99. the cost to the store is $5.29. what is the markup rate on a paperback book, based on its cost?

Will give brainliest immeadeately true or false: the origin woud be included in the solution set for the inequality: y< 2x-5