Unit 5 Test Review Problem 1 Solve Using

Unit 5 Test Review

Problem #1: Solve Using Substitution { 5 x + 4 y = 32 9 x – y = 33 (4 , 3)

Problem #2: Solve Using Substitution { 5 x + 2 y = 9 x + y = -3 (5 , -8)

Problem #3: Solve Using Substitution { -5 x + 3 y = 51 y = 10 x - 8 (3 , 22)

Problem #4: Solve Using Substitution { 2 x - y = 24 x – 9 = -y (11 , -2)

Problem #5: Solve Using Elimination { 3 x + 4 y = -1 5 x - 7 y = -70 (-7 , 5)

Problem #6: Solve Using Elimination { -16 x + 2 y = -2 y = 8 x - 1 Infinite Solutions Because they are the same line

Problem #7: Solve Using Elimination { -7 x + 10 y = 11 -8 x + 15 y = 34 (7 , 6)

Problem #8: Graph the System of Inequalities { x > -2 x + 2 y < 4

Problem #9: A plane traveled 580 miles to Ankara and back. The trip there was with the wind. It took 5 hours. The trip back was into the wind. The trip back took 10 hours. Find the speed of the plane in still air and the speed of the wind. Plane: 87 mph Wind: 29 mph

Problem #10: A collection of thirty-five coins totals $5. 35. If the collection consists of only nickels and quarters, how many of each coin is there? Nickels: 17 Quarters: 18

Problem #11: Amanda and Sparky are selling flower bulbs for a school fundraiser. Customers can buy packages of tulip bulbs and bags of daffodil bulbs. Amanda sold 6 packages of tulip bulbs and 12 bags of daffodil bulbs for a total of $198. Sparky sold 7 packages of tulip bulbs and 6 bags of daffodil bulbs for a total of $127. Find the cost each of one package of tulips bulbs and one bag of daffodil bulbs. Tulips: $7 Daffodils: $13