Answer:
The slope for L & L Printing is of $1.50, while for Red Baron is of $1.82.
Explanation:
Equation of a line:
The equation of a line has the following format:

In which m is the slope, which represents how much y changes when x changes by 1 unit.
In this question:
The slope for each of the printing companies is the price of a program. Then:
The slope for L & L Printing is of $1.50, while for Red Baron is of $1.82.