6-2 (continued) Solving Systems Using Substitution 17. A student bought 1 box of cravons and 5 reams of paper for $54. She bought 5 Doxes of crayons and 3 reams of paper for $50. What is the cost of each box of crayons and each ream of paper? 18. Suppose you got 8 mangoes and 3 apples for $18 and 3 mangoes and 5 apples for $14.50. How much does each mango and each apple cost? 19. A shopper purchased 4 tables and 2 chairs for $200 and 2 tables and 7 chairs for $400. What is the cost of each table and each chair? 20. If the length of the rectangle is twice the width, and the perimeter of the rectangle is 30 cm, what is length and width of the rectangle? 21. The population of a city is 2,500. If the number of males is 240 more than the number of females, how many males and females are there in the city? Solve each system by substitution. Tell whether the system has one solution, infinitely many solutions, or no solution. 23. x - 9y = -10 24. x = 22. 7x + 2y = -13 +1 6x + y = -5 -3х -8у 3 -23 y = 4x – 5 26. у %3D -8х -37 25. x- 2y-1 = 0 27. 3x + 6y = 18 %3D x+3y = 4 y- 5x + 14 = 0 3y = -r + %3D 29. 2х 3D Зу - 9 3y - 9 -3x + y = 10 28.5x-9y = 29 30. 5y = 7x +22 %3D 12x + y = 47 %3D X = -6y + 1

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