Please solve and check work. Please show all work and steps. Thank you

For MO ONLINE www.progressinn Simplify by combining like terms, then solve. 18. 5.3c - 3c + 15 = 1684 16. (0.7n + 0.2n) + 0.8 = -2.8 17. 32.5 = 4.3r + 16 -r 0.9n + 0.8 = -2.8 0.9n + 0.8 - 0.8 = -2.8 - 0.8 C= 0. 8 0.9n = -3.6 0.9n = -3.6: n = -4 5 er 0.9 0.9 20. 11.36 - 10.16 + 7 = 13.24 21. (5.9p + 0.3p) +7.1= 19. 8.12 = -1.5f - 8.12 -f f= - 6.496 1 = 52 Problem Solving 23. Stephanie set her rental car trip meter a 22. Sports At the July 1980 Olympics, the while the odometer read 4962.8. She drop record for the women's shot put was 22.41 meters, which was 5.09 meters less the same route round-trip from the airpo than double the 1948 Olympic winning to her hotel. When Stephanie returned distance. What was the women's winning car, the odometer read 5554 miles. What shot put distance in the 1948 Olympics? the car trip meter reading after her tripf the airport to the hotel? W= 13.75 591.2 24. Astronomy The average density of Earth is 25. Zoology The Wilson's Storm Petrel has 5.5 g/cm3, which is 0.1 g/cm less than 8 times a wingspan of 0.41 meter, which is 0.15 that of Saturn. What is the average density of Saturn? meter less than one fourth the wingspan the Black-browed Albatross. What is the wingspan of the Black-browed Albatros CHALLENGE Does the given value make the equation true? If false, tell what value makes the equation true. 26. 9 = (3m + 7m + 8) + 2, when m = 2.8 27. -1 2 2h + 11 - 3h when h = 1.4 110 Chapter 4