156. 20th. 101st. 26. a. 21, 22, etc. [4]Exercise76. 440. 201. 4frac16. 128. −378. 18712. 1, 3, 5. 156. 300. 2550 yd. 5812.1 ft. 144.9 ft. 11, 15. 7, 9, 11. 12 miles. 5, 12, 19. [4]Exercise77. 243. 192.