Answer:
65 and 75
Step-by-step explanation:
8 units
The origin is 0, so -8 is 8 units away from the origin.
400 atheletes (answer 2)
35:21:14
x2
70:42:28
140:84:56
280:168:112
x1.5
420:252:168
420 + 252 + 168 = 840