Jenny’s rectangular bedroom has an area of 120 square feet. One contractor calculates the cost to wallpaper her bedroom using the formula of , where

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Jenny’s rectangular bedroom has an area of 120 square feet. One contractor calculates the cost to wallpaper her bedroom using the formula of <img alt='images' src='https://www.fatskills.com/images2/ACT/eq02004.png'/><!--<m:math display='inline' overflow='scroll' xmlns:m='http://www.w3.org/1998/Math/MathML'><m:mrow><m:mn>0.80</m:mn><m:mi>A</m:mi><m:mo>+</m:mo><m:mn>100</m:mn><m:mi>d</m:mi></m:mrow></m:math>-->, where <em A</em> is the area of the room and <em d</em> is the number of days required to apply wallpaper to the room. How much will Jenny pay this contractor to apply wallpaper to her bedroom if it takes 4 days to complete the project?