(1-0.15)=0.85
0.85 (155.25)=131.962
estimated answer
131.962 is about $132.00
8x-24
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Answer for the equation by elimination
The area of the scale drawing would be 1080 square centimeters or (1080 cm^2). I got this answer through first finding the area of the classroom in feet (which is A= lw = [18][20] = 360 ft^2) and then I proceeded to converting it to centimeters via given scale factor (3 cm = 1 foot) and had the answer of 1080 centimeters squared.
it would obviously take 15 days if this answers your question
