Are the data Quantitative or Categorical? The amount of caffeine in cola. Quantitative

Categorical

Ivan and jeff buy a package of 8 pens for $4.00. ivan wants 5 of the pens, and jeff wants 3.how much should each student pay?

How do you determine whether a relationship represented as as graph is linear or nonlinear

David is spreading mulch on a triangular area of his flower bed. the coordinates of the vertices of the area are (1, 3), (9, 3), and (4, 6). what is the area of the triangle if each square has an area of 3 square feet?