mr. Ying had 3 1/3 gallons of gas in his car. He filled up his 20 1/2 gallons tank. How much gas did he buy to fill the tank?

Problem fathi wants to print out a pdf document that is 48 pages long. to save paper, he decides to print on both sides of each sheet and to print two pages on each side of the sheet. how many sheets of paper will he need?

Which of the following graphs could represent a cubic function?

If you were constructing a triangular frame, and you had wood in the length of 4inches, 4 inches, and 7 inches, would it make a triangle? would you be able to create a frame from these pieces of wood? yes or no. explain your mathematical thinking