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N + 4 ≥ -7 11. b - 3 ≤ 15 12. 5x < 35 d 13. _ > -4 g 14. _ ≥ -9 15. -8p ≥ 24 16. 13 - 4k ≤ 27 17. 14 > 7y - 21 18. -27 < 8m + 5 19. 6b + 11 ≥ 15 20. 2(4t + 9) ≤ 18 21. 90 ≥ 5(2r + 6) 3t + 6 22. _ < 3t + 6 k+7 23. _ - 1 < 0 2n - 6 24. _ +1>0 2 2 -3 3 5 25. 40 an hour working at Box Office Videos. Each week 25% of his total pay is deducted for taxes. 4x) ≥ 120 to determine how many hours he must work. 26. STATE FAIR Admission to a state fair is $12 per person. Bus parking costs $20. Solve 12n + 20 ≤ 600 to determine how many people can go to the fair if a group has $600 and uses only one bus.

04 the number of passes completed, A is the number of passes attempted, Y is passing yardage, T is the number of touchdown passes, and I is the number of interceptions. In 2005, Ben Roethlisberger of the Pittsburgh Steelers completed 168 of the 268 passes he attempted for 2385 yards. He threw 17 touchdowns and 9 interceptions. Find his efficiency rating for 2005. T. Problems 36. OPEN ENDED Write an algebraic expression in which subtraction is performed before division, and the symbols ( ), [ ], or { } are not used.

9 = x + 12 2B. 8 = y + 5 Symbols The empty set is symbolized by { } or . Because the absolute value of a number is always positive or zero, an equation like x = -5 is never true. Thus, it has no solution. The solution set for this type of equation is the empty set. EXAMPLE No Solution Solve 5x - 6 + 9 = 0. 5x - 6 + 9 = 0 5x - 6 = - 9 Original equation Subtract 9 from each side. This sentence is never true. So the solution set is 3A. Solve -2 3a - 2 = 6. 3B. Solve 4b + 1 + 8 = 0.

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