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terrichichester-BU250-unit3-homework

# terrichichester-BU250-unit3-homework - Unit#3 Homework 1...

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Unit #3 Homework 1. Practice Test # 13 A discount store sold plastic cups for \$3.50 each and ceramic cups \$4.00 each. If 400 cups were sold for a total of \$1,458, how many cups of each type were sold? What was the dollar value of each type of cup sold? Variables: N = ceramic cups. 400-N = plastic cups 4N + 3.5 (400 – N) = \$1,458 ……. get rid of parenthesis 4N + 1,400 – 3.5N = 1,458 ……. . combine like terms .5N + 1,400 = 1,458 …………. .subtract 1,400 from both sides .5N + 1,400 – 1,400 = 1,458 – 1,400 .5N = 58 …………divide both sides by .5 N= 116 ceramic cups 3.50 (400 – 116) = 3.50 (284) = 994 Cups sold 116 ceramic cups 116 * \$4.00 = \$464 284 Plastic cups 284 * \$3.50 = 994 400 total \$1,458 2. Practice Test #15 Lashonna Harris is a buyer for Plough. She can purchase 100 pounds of chemicals for \$97.00. At this rate, how much would 2,000 pounds of the chemical cost? Variable: C = cost of 2,000 pounds of chemicals

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terrichichester-BU250-unit3-homework - Unit#3 Homework 1...

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