(D) For questions 5 and 6, use the solution to the equation 2x 3 = 11 below. – Start: 2x 3 = 11 – Step 1: 2x 3 + 3 = 11 + 3 – Step 2: 2x = 14 Step 3: Step 4: = 7 x 5. (1.7-1) In Step 1, the addition property of equality was applied. (A) True (B) False 6. (1.7-2) In Step 3, the symmetric property of equality was applied. (A) True (B) False 7. (1.8-1, 1.5, 1.6) Let the price of a meal at a restaurant be The tax and tip on the meal are p. generally a percentage of the meal’s price. The total cost of the meal is its price plus tax plus tip. (a) Write an expression for the total cost of a meal where the tax is 8% and the tip is 15%. (b) Write an expression for the total cost of a meal where the tax is and the tip is x% g%. (c) David calculates a 15% tip by dividing the meal price by 10, dividing that number by 2, and then adding the two numbers, i.e. . Explain whether or not this method is correct. 8. (2.4-1) An internet business sells U.S. flags for $16.95 each, plus $2.50 shipping per flag. Shipping is free, however, on orders where more than $100.00 of flags are purchased. Which correctly shows the number of flags that must be purchased to get free shipping? f
(D) For questions 5 and 6, use the solution to the equation 2x – 3 = 11 below. Start: 2x – 3 = 11 Step 1: 2x – 3 + 3 = 11 + 3 Step 2: 2x = 14 Step 3: Step 4: x = 7 5. (1.7-1) In Step 1, the addition property of equality was applied. (A) True (B) False 6. (1.7-2) In Step 3, the symmetric property of equality was applied. (A) True (B) False 7. (1.8-1, 1.5, 1.6) Let the price of a meal at a restaurant be p. The tax and tip on the meal are generally a percentage of the meal’s price. The total cost of the meal is its price plus tax plus tip. (a) Write an expression for the total cost of a meal where the tax is 8% and the tip is 15%. (b) Write an expression for the total cost of a meal where the tax is x% and the tip is g%. (c) David calculates a 15% tip by dividing the meal price by 10, dividing that number by 2, and then adding the two numbers, i.e. . Explain whether or not this method is correct. 8. (2.4-1) An internet business sells U.S. flags for $16.95 each, plus $2.50 shipping per flag. Shipping is free, however, on orders where more than $100.00 of flags are purchased. Which correctly shows the number of flags f that must be purchased to get free shipping?
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