Explain whether each of the following is a positive or negative externality.

smoking on campus exposes students to secondhand smoke.

• college graduates add to the nation's supply of skilled workers and add to productivity.

• biotech firms invent new medicines.

• using energy-saving light bulbs reduces the pollution from electricity-generating plants.

• crowded freeways with heavy truck usage expose the surrounding communities to increased health risks.

• restoring the amazon forest can reduce global levels of pollution.

If temper company, a manufacturer of mattresses, was considering moving its production facilities to china but decided against it because the additional costs of shipping the mattresses back to the u.s. would offset the cost savings associated with moving the production facilities, the increased costs associated with shipping would be an example ofanswers: learning-curve economies.diseconomies of scale.economies of scale.competitive advantages.

Stephen barrett,md previous writing experience ?

After graduation, you plan to work for dynamo corporation for 12 years and then start your own business. you expect to save and deposit $7,500 a year for the first 6 years (t = 1 through t = 6) and $15,000 annually for the following 6 years (t = 7 through t = 12). the first deposit will be made a year from today. in addition, your grandfather just gave you a $32,500 graduation gift which you will deposit immediately (t = 0). if the account earns 9% compounded annually, how much will you have when you start your business 12 years from now?