Which of the following is true concerning purely competitive industries?

a. there will be economic losses in the long run because of
cut-throat competition.
b. economic profits will persist in the long run if consumer
demand is strong and stable.
c. in the short run, firms may incur economic losses or
earn economic profits, but in the long run they earn normal
profits.
d. there are economic profits in the long run, but not in the
short run.

Which statement is true about the elements of the interface of a presentation program? a. the status bar appears at the top of the page and displays options to style your slides. b. the tool bar displays the thumbnails of your presentation slides in the order they will appear in the presentation. c. rulers indicate the margins, tabs, and indents in a presentation slide. d. the document area provides a list of commands to create, format, and edit presentations.

You are thinking of making your mansion more energy efficient by replacing some of the light bulbs with compact fluorescent bulbs, and insulating part or all of your exterior walls. each compact fluorescent light bulb costs $4 and saves you an average of $2 per year in energy costs, and each square foot of wall insulation costs $1 and saves you an average of $0.20 per year in energy costs.† your mansion has 150 light fittings and 3000 sq ft of uninsulated exterior wall. to impress your friends, you would like to spend as much as possible, but save no more than $750 per year in energy costs (you are proud of your large utility bills). how many compact fluorescent light bulbs and how many square feet of insulation should you purchase? how much will you save in energy costs per year? (if an answer does not exist, enter dne.)

Asap describe three different expenses associated with restaurants. choose one of these expenses, and discuss how a manager could handle this expense.