Let x represent the number of copies and y the total cost of printing. It costs $1.50 for printing each copy of a newsletter. On top of that a printer's fee of $450 is added. Let's write an expression for the total cost of making x prints.
y=1.5 x+450We know that the revenue r is $3 for each newsletter sold. Using this information we can form a second equation.
r=3 x
Let's combine the equations to form a system of equations.
y=1.5x+450 & (I) r=3x & (II)
If they wants to break even the revenue has to be equal to the cost. In other words, r and y must be equal.
y=1.5x+450 & (I) y=3x & (II)
Let's solve this using the Substitution Method.
