please help.

Ingrid processes and bottles jam in her home-based business. Her fixed costs are $180 per month and the variable cost per jar is $1.50. She sells the jam to local grocery stores for $2.70 each. a. How many jars must she sell per year to break even? Break-even jars per year b. What will be her profit if she sells 3,300 jars in a year? Profit $ per year c. How many jars must she sell per year to have a loss of no more than $1,800 ? Number of jars per year