15, 17, 19, 21

when the new pricing model (higher per- class fee but lower membership fee) will $30 per clas be better than the old pricing model used $15 per class and last year. He uses a table to calculate the and $50 member members' costs for different numbers of $140 membership fee fee classes. A. Copy and complete the table. Cost under new model Number of Cost under old model ($) classes ($) 2(15) + 140= 170 2(30) + 50 = 110 2 ? 4 ? ? 6 ? ? V ? B. Let c be the number of classes. What expression models the cost under the old pricing? What expression represents the cost under the new pricing? C. For gym members, the new pricing is better than the old pricing when they pay less than they did before. The inequality that models this situation is 30c + 50 11 can be written as x 3 5 14. -1.3 + 4.9(1 - 3.6x) 2(1 + 3x) - (1 - 3x) 16. 2(1 - 3r) + 3(r+ 2) 5 17. n + 3 - 2n 25+n-1+3 18. 3 - 4x 2 -9- 2x 19. 5 + 2 ( n - 3)