Ana has started her own company, Imprint Shirts, which makes Custom Embroidered Logo polo shirts for special orders. Since she has just begun this operation, she rents the equipment from a local shop when necessary. The cost of using the equipment is $700. The materials used in one shirt cost $11, while the labor cost is $4 per shirt. Ana can sell these shirts for $20 each.

a) How many shirts must Ana sell to break even?

b) What is the total revenue for breaking even?

c) How many shirts must Ana sell to make a profit of $360?

d) What is the total revenue for making a profit of $360?