1. Homework: Ch 5 Review due next week FrontPage: NNIGN 21 Inane Baby Products For Questionable Parents

2. SUPPLY : LAWS AND COSTS Chapter 5, Section 1

3. Supply Supply refers to the willingness and ability of producers to offer goods and services for sale.

4. The Law of Supply States that producers are willing to sell more of a good or service at a higher price than they are at a lower price. –When prices decrease, quantity supplied decreases. P  Q S  –When prices increase, quantity supplied increases. P  Q S 

5. The Law of Supply – really? Yep. When college students learn computer engineering jobs pay more than English professor jobs, the supply of students with majors in computer engineering will increase. -When consumers start paying more for cupcakes than for donuts, bakeries will increase their output of cupcakes and reduce their output of donuts in order to increase their profits. -When your employer pays time and a half for overtime, the number of hours you are willing to supply for work increases.

6. Supply Schedules A supply schedule is a table that shows how much of a good or service an individual producer is willing and able to offer for sale at each price in a market. A market supply schedule is a table that shows how much of a good or service all producers in a market are willing and able to offer for sale at each price.

7. Smith Family’s Tomato Supply Schedule Price per Pound ($) Quantity Supplied (in lbs.) 2.0050 1.7540 1.5034 1.2530 1.0024 0.7520 0.5010

8. Supply Curves A supply curve is a graph that shows how much of a good or service an individual producer is willing and able to offer for sale at each price in a market. A market supply curve is a graph that shows how much of a good or service all producers in a market are willing and able to offer for sale at each price.

9. Smith Family’s Tomato Supply Curve 01020304050 Price per pound ($).50.75 1.00.25 1.25 1.50 1.75 2.00 Quantity supplied of tomatoes (lbs.)

10. Practice

11. FrontPage: NNIGN Last Word: CH 5 Review and Quiz Thursday Life-Changing Tip Of The Day: Reverse Your Hoodie

12. Hint: this impacts supply… Chapter 5, Section 2 COSTS OF PRODUCTION

13. Labor is a cost for producers Question: Will more labor always = more output? –Short answer – NO –Marginal Cost is the extra cost of producing one more unit. –Marginal product is the change in total output brought about by adding one more worker. –A marginal product schedule shows the relationship between labor and marginal product.

14. Marginal Product Schedule Number of WorkersTotal ProductMarginal Product 000 133 274 3125 4197 52910 64213 75311 8618 9665 10671 1165-2 Increasing returns occur when hiring new workers causes marginal product to increase Diminishing returns occur when hiring new workers causes marginal product to decrease

15. Fixed costs are expenses that the business owner must pay no matter how much or little they produce –Lighting in factory, rent for store, machinery, etc. –These don’t change in the short run Variable costs depend on the level of production output. –Wages/salaries and raw materials are a good example of this –These do change as production level changes Total cost is the sum of fixed and variable costs.

16. Fixed costs and variable costs Michael, Pam and Ryan leave Dunder Mifflin paper company to strike out on their own… –Selling paper themselves, delivering it themselves (at 5am), they have managed to undercut the prices of Dunder Mifflin, Staples, all the other competition. –They visit a financial advisor to find out whether they can hire a delivery guy to take care of some of those 5am deliveries… –http://economicsoftheoffice.com/all/?jel=D24http://economicsoftheoffice.com/all/?jel=D24

17. Production Cost Schedule Number of Workers Total Product Fixed Costs ($) Variable Cost ($) Total Cost ($) Marginal Cost ($) 00400 --- 1340307010 2740621028 31240971377 419401321725 529401722124 642402112513 753402773176 8614037341312 9664047351320 10674050354330 116540539579----

18. Where is highest profit?

19. Equations for the chart Total product = total revenue/marginal rev Total cost (fixed and variable costs) = profit – total revenue Marginal cost = total cost/ total product Marginal revenue = cost of one unit (price of item) Total revenue = product x marginal cost