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David CHIPANDA
Answers (1)
Cost of 20 copies= 20x$0.05 =$1 Cost of 80 copies =80x0.04 =$3.20 Cost of 100 and more copies =0.03(x-100) So our gradient. =0.03 Y=MX+b Total cost =gradient x no of copies+ constant 4.20=0.03(100)+b 4.20=3+b 1.2=b Y=0.03x+1.2
