The graph models the linear relationship between the charge for a trip and the number of miles driven for two taxis.

Number 3/ letter C

Step-by-step explanation:

I must assume that you meant "6  1/2" and not "61 / 2."

If each cupcase requires 1/3 ounce of flour, then the total whole cupcakes that can be made using the entire 6 1/2 oz. bag is

6 1/2 oz                     13 oz      1 cupcake
= * = 39 cupcakes (answer)
 1/3 oz / cupcake         2             (1/3 oz)