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Week_3_Quiz[1][1][1] - Week 3 Quiz Are you getting this...

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Week 3 Quiz Are you getting this? Section 3.2 General Equations 1. Solve for the value of x X = ____2/10__ 2. Solve 5x-2y= -3 when x = -3 5 ( -3 ) - 2y = -3 -15 -2y =-3 -2y = 12 y = -6 Answer: ___-6___ Section 3.3 General Equations Part 2 1. Two children are sitting on a seesaw that is 12 ft long. One child weighs 60 lbs. The other child weighs 90 lbs. How far from the 90 lb. child should the fulcrum be placed so that the seesaw balances? Answer: ______7.2____ feet from the fulcrum
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2. Solve the equation for the value of x 7(3x+6) – 4(3+5x) = 13 + x Answer x =_ 7(3x + 6) - 4(3 + 5x) = 13 + x; distribute the 7 and the -4 21x + 42 - 12 - 20x = 13 + x combine like terms x + 30 = 13 + x subtract x from each side x - x + 30 = 13 + x - x 30 = 13 no solution Section 3.4 Translating sentences into equations 1. The sum of two numbers is eighteen. The total of three times the smaller and twice the larger is forty-four. Find the value of the two numbers. What equation would you use to solve the problem? ___ x + y = 18 ___________________ 3x + 2y = 44 What are the values of the two numbers? First number = ____8___ Second number =
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