Jen left a job paying $40,000 per year to start her own florist shop in a building she owns. The market value of the building is $80,000. She pays $40,000 per year for flowers and other supplies, and has a bank account that pays 6 percent interest. What is the economic cost of Jen's business? $?

11.Suppose Duke is driving to a nearby town to attend a dance party, and must decide how fast to drive. The marginal benefit of speed is the extra dance time he will get by driving faster, and the marginal cost is the additional risk of a collision. The marginal-benefit curve is negatively sloped, and the marginal-cost curve is positively sloped as shown at right.

Suppose Duke's favorite dance partner, Daisy, is grounded for makeup violations. Use your curves to show how Duke's chosen speed will change.

Use the line drawing tool to draw and label a new line that will result from Daisy's absence.

Carefully follow the instructions above, and only draw the required objects.

23.Your savings account pays 12 percent per year: Each $100 in the bank grows to $112 over a one-year period. If prices increase by 7 percent per year, by keeping $100 in the bank for a year you actually gain $?