Susan Greenberg, who works in a typewriter factory, becomes unemployed because people start buying personal computers instead of typewriters. Susan can best be described as:

The market for lawn services is perfectly competitive. Larry's Lawn Service cannot increase its total revenue by raising its price because ________

A) Larry's supply of lawn services is perfectly inelastic B) the demand for Larry's services is perfectly inelastic C) Larry's supply of lawn services is inelastic D) the demand for Larry's services is perfectly elastic

On a given short-run Phillips curve which of the following is held constant?

a. the level of GDP b. the unemployment rate c. expected inflation d. employment