Joslyn wants buy 4 packs of pens for $12.00 each and a pack of pencil for $6.00 how much money does she needs

Solve for x i'll try to attach the files bc it's not letting me for some reason

The graph below represents the number of dolphins in a dolphin sanctuary. select all the key features of this function.

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?