3 TRANSLATE THE SENTENCE INTO AN EQUATION:6)Five times the difference of m and n is the same as nine times n.5(m – n) = 9 nEquation: ______________________
4 TRANSLATE THE SENTENCE INTO AN EQUATION OR INEQUALITY.SOLVE. 7)Twice a number minus 5 is less than or equal to 15.2 n – 5 ≤ 15Inequality: ______________________+ 5+ 52 n ≤ 2022n ≤ 10Solution: ______________________
5 TRANSLATE THE SENTENCE INTO AN EQUATION OR INEQUALITY.SOLVE. 8)Two times a number subtracted from 13 is less than three.13 – 2 n < 3Inequality: ______________________- 13- 13– 2 n < - 10- 2- 2n > 5Solution: ______________________
6 9)John is on a business trip and plans to rent a full size car from Speedy Rent-A-Car. His company has given him a budget of $ 75 per day for a rental car. What is the maximum distance John can drive in one day and stay within his budget?x = 347 milesx = 75.00.15 x = 52.05
7 He can talk for 35.7 minutes or less. 10)Alphonso’s long distance phone company charges him 7 cents for each minute or any part of a minute. He wants to call his friend, but he does not want to spend more than $ 2.50 on the call. How long can he talk to his friend?.07 x ≤ 2.50x ≤ 35.7He can talk for 35.7 minutes or less.
8 He should stay on his diet for more than 12.5 weeks. 11)Danny weighs 200 pounds. He wants to weigh less than 175 pounds. If he can lose an average of two pounds per week on a certain diet, how long should he stay on his diet to reach his goal weight?200 – 2x < 175– 2x < - 25x > 12.5He should stay on his diet for more than 12.5 weeks.
9 12)If 2 x + 7 = 15, what is the value of 3 x – 4?2 x + 7 = 152 x = 8x = 43(4) – 4 = 12 – 4 = 8
11 It averaged 8 km/h on the trip there. 1)An aircraft carrier made a trip to Guam and back. The trip there took three hours and the trip back took four hours. It averaged 6 km/h on the return trip. Find the average speed of the trip there.rtd = r ttherex3 h3 xback6 km/h4 h6(4) = 243 x = 24It averaged 8 km/h on the trip there.x = 8
12 It took 10 hours to fly there. 2)A passenger plane made a trip to Las Vegas and back. On the trip there it flew 432 mph and on the return trip it went 480 mph. How long did the trip there take if the return trip took nine hours?rtd = r tthere432 mphx432 xback480 mph9 h480(9) = 4320432 x = 4320x = 10It took 10 hours to fly there.
13 The cattle train’s speed was 10 mph. 3)A cattle train left Miami and traveled toward New York. 14 hours later a diesel train left traveling 45 km/h in an effort to catch up to the cattle train. After traveling for four hours, the diesel train finally caught up. What was the cattle train’s speed?rtd = r tcattlex18 h18 xdiesel45 mph4 h45(4) = 18018 x = 180The cattle train’s speed was 10 mph.x = 10
14 Jose had driven for 10 hours. 4)Jose left the White House and drove toward the recycling plant at an average speed of 40 km/h. Rob left some time later driving in the same direction at an average speed of 48 km/h. After driving for five hours, Rob caught up with Jose. How long did Jose drive before Rob caught up?rtd = r tJose40 km/h(x + 5)40(x + 5)Rob48 km/h5 h48(5) = 24040(x + 5)= 240x = 10Jose had driven for 10 hours.40 x = 24040 x = 40
15 The trip there took 11 – 1 = 10 hours. 5)A cargo plane flew to the maintenance facility and back. It took one hour less time to get there than it did to get back. The average speed on the trip there was 220 mph. The average speed on the way back was 200 mph.How many hours did the trip there take?rtd = r tthere220 mph(x – 1)h220(x – 1)back200 mphx h200 x220(x – 1) = 200 xThe trip there took 11 – 1 = 10 hours.220 x – 220 = 200 x20 x = 220x = 11
16 Matt needs to travel 4 hours. 6)Kali left school and traveled toward her friend’s house at an average speed of 40 km/h. Matt left one hour later and traveled in the opposite direction with an average speed of 50 km/h. Find the number of hours Matt needs to travel before they are 400 km apart.rtd = r tKali40 km/h(x + 1)40 (x + 1)Matt50 km/hx h50 x40 (x + 1) + 50 x = 400x = 440 x x = 400Matt needs to travel 4 hours.90 x = 40090 x = 360