p. 96 13 17 5x - 3 5x - 6 14 18 5y - 9 a-7 15 -3a + 9 19 -19x +2y 21 22 23 -16a+27b-32c -2x 25 26 27 29 30 31 9y – 25z 3m – 6n 33 a + 4b -40 -6p + 2q 6x – 4y 34 -10 35 + 6y 0 7 19 16 8n + 7 20 -a – 4b 24 -7a – 5b 28 12m + 5n 32 -14 (31) Simplify: [9 – 2(5 - 4)] [9 – 2(1)] 7 (35) [4(9 - 6) + 11] – [14 – (6 + 4 )] [4(3) + 11] – [14 – (10 )] [12 + 11] – [4] 19 QQ 1 A,C,E,G B,D,F Simplify: 5y – (2x – 3y) 7b – (3a – 5b) 2 6m – 3(5m – 2) 4j – 2(7j – 8) 3 50 –[12 – (16 + 5)] 39 –[13 – (15 + 3)] QQ 1 2 3 A,C,E,G B,D,F Simplify: 5y – (2x – 3y) 7b – (3a – 5b) 8y – 2x 12b – 3a 6m – 3(5m – 2) 4j – 2(7j – 8) 6 – 9m – 9m +6 – 10j 16 – +16 3910j –[13 – (15 + 3)] 50 –[12 – (16 + 5)] 59 44 By inserting grouping symbols, how many different values can you give the expression 9 • 2 + 5 • 4 = 38 Problem Solving Strategy Write an Equation In two days Lupe hiked 65 km. She hiked 34.3 km the first day. How far did she hike the second day? Let x = km that Lupe hiked the second day. 34.3 km x 65 km 65 = x + 34.3 x = 65 - 34.3 Dan earns $3 for every lawn he mows. How many lawns must he mow to earn $54? Let x = # of lawns mowed $54 = x • $3 Tania sold three times as many tickets as Michele. Michele sold 16 tickets. How many did Tania sell? Let T = tickets that Tania sold Michele = 16 T = 3 • 16 PRACTICE TEST Page 110, 1 - 55