Gilberto owns a water pump. Because pumping large amounts of water is harder than pumping small amounts, the cost of producing a bottle of water rises as he pumps more.
Here is the cost he incurs to produce each bottle of water:
Cost of the first bottle $1
Cost of the second bottle $3
Cost of the third bottle $5
Cost of the fourth bottle $7
(a) From this information, derive Ernie’s supply schedule. Graph his supply curve for bottled water.
(b) If the price of a bottle of water is $4, how many bottles does Ernie produce and sell? How much producer surplus does Ernie get from these sales? Show Ernie’s producer surplus in your graph.
(c) If the price rises to $6, how does the quantity supplied change? How does Ernie’s producer surplus change? Show these changes in your graph.

Lavage rapide is a canadian company that owns and operates a large automatic car wash facility near montreal. the following table provides data concerning the company’s costs: fixed cost per month cost per car washed cleaning supplies $ 0.70 electricity $ 1,400 $ 0.07 maintenance $ 0.15 wages and salaries $ 4,900 $ 0.30 depreciation $ 8,300 rent $ 1,900 administrative expenses $ 1,400 $ 0.03 for example, electricity costs are $1,400 per month plus $0.07 per car washed. the company expects to wash 8,000 cars in august and to collect an average of $6.50 per car washed. the actual operating results for august appear below. lavage rapide income statement for the month ended august 31 actual cars washed 8,100 revenue $ 54,100 expenses: cleaning supplies 6,100 electricity 1,930 maintenance 1,440 wages and salaries 7,660 depreciation 8,300 rent 2,100 administrative expenses 1,540 total expense 29,070 net operating income $ 25,030 required: calculate the company's revenue and spending variances for august.

When it is 4: 00 a. m. in halifax, it is 1: 00 p. m. in karachi, and when it is 9: 00 a. m. in karachi, it is 5: 00 a. m. in warsaw. mary left halifax to fly to karachi, but she accidentally left her watch on warsaw time. according to mary’s watch, she left halifax at 9: 40 p. m. on monday. the local time when she arrived at karachi was 3: 00 p. m. tuesday. how long was mary’s flight? a. 9 hours, 20 minutes b. 13 hours, 20 minutes c. 14 hours, 20 minutes d. 17 hours, 20 minutes

Greentel, a telecom giant, has been using the service of orpheus inc. for training its employees. according to a deal signed by the two companies, orpheus inc. is not only responsible for training greentel's employees but also for providing comprehensive administrative services to the telecom giant. in this instance, greentel engages in