Systems of equations can be used to compare purchasing options. Sup- pose someone wants to print photographs. The person might want to
compare these two options:
the cost of buying a printer plus the cost of printing each
photograph themselves
.
paying a printer's rate for printing each photograph
Without knowing any of the actual costs involved, answer the following
two questions in general terms.
1.
When would the two costs be equal?
2.
How much would you need to print for it to make sense to buy
your own printer?