Assignment #1 Instructions: You must show all your work. You will not receive fu

Question

Assignment #1 Instructions: You must show all your work. You will not receive full credit for a correct answer if there is no work shown. Please use complete sentences and write down all your reasoning clearly Problem 1. (5 points): You are thinking of making your home 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 n energy costs, and each 80.20 per year in energy costs. Yo exterior wall. You can spend no more than S1200 and would like to save as much per year in energy costs as possible. How uorescent of insulation should you purchase? How much will you save in energy costs per square foot of wall insulation cost $1 and saves you an average of ur home has 60 light fittings and 1100 sq. ft. of uninsulated many compact fuorescent light bulbs and how many square feet year? O Type here to seach o B e DELL A P10 F12 6 8 AIt Alt Ctrl Inspiron 11 3000 Series

Explanation / Answer

Savings per dollar spend needs to be computed for both the options:

Savings per dollar for Fluorescent bulb = 2/4 = 0.5 dollar

Savings per dollar for Insulation = 0.2/1 = 0.2 dollar

So, it is more advantageous to first maximize fluorescent bulb which are 60 in number.

Total money spend = 60*4 = 240$

Money left = 1200-240 = 960$

So, Total money/Cost for insulation = 960/1 = 960 square feet of un-insulated exterior wall can have insulation in place

Ans:

Fluorescent bulb = 60

Insulation = 960 sq feet

Total savings in energy cost = 60*2 + 960*0.2 = 252$

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