Your local telephone compan has offered you a choice between the following billing plans:
Plan A: Pay $.05 per call.
Plan B: Pay an initial $2/wk, which allows you up to 30 calls per week at no charge. Any calls over 30/wk cost $.05 per call.
If your income is $12/wk and the composite good costs $1, graph your budget constraints for the composite good and calls nder the two plans.