Refer to the example above. If the costs of the T-shirt company change to the
given values and the selling price remains the same, determine the number of
T-shirts the company must sell in order for income to equal expenses.
1. printing machine $5000.00;
T-shirt: $10.00 each
3. printing machine: $8800.00;
T-shirt: $4.00 each
2. printing machine: $2100.00;
T-shirts $8.00 each
4. printing machine: $1200.00;
T-shirts $12.00 each