The equation above models the total cost , in dollars, for purchasing pens and notebooks. The price, in dollars, of each pen is the same, and the price, in dollars, of each notebook is the same. Which of the following is the best interpretation of the number 0.75 in this context?
The total cost of all pens purchased
The price, in dollars, of one notebook
The number of pens purchased
The price, in dollars, of one pen
