Answered: Energy Efficiency You are thinking of…

Algebra and Trigonometry (6th Edition)

6th Edition

ISBN:9780134463216

Author:Robert F. Blitzer

Publisher:Robert F. Blitzer

ChapterP: Prerequisites: Fundamental Concepts Of Algebra

Section: Chapter Questions

Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...

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Energy Efficiency 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 250 light fittings and 2,900 square feet of uninsulated exterior wall. To impress your friends, you would like to spend as much as possible, but save no more than $700 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 (in dollars) per year? (If an answer does not exist, enter DNE.)

Compact fluorescent light bulbs=_______

Insulation=_________ft²

Total cost=$________

Energy costs savings=$_______ per year

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