From Opportunity cost point of view. Although attending college is expensive, time-consuming, and requires effort, but people decide to attend college. Explain why?

Kayla and jada are roommates in new york city. both kayla and jada recently received pay raises. kayla now buys more movie tickets than before, but jada buys fewer. kayla behaves as if movie tickets are goods and jada's income elasticity of demand for movie tickets is

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.)

You should do all of the following before a job interview except