<span>The two checkpoints are 4,920 ft. apart from each other. The total distance of the race is 15,840 ft. If checkpoint C half the distance between checkpoint B and the end of the race, the distance between Checkpoint B and the end of the race is 9,840 ft. Half of that distance is 4,920 ft.</span>
Answer: the answer is 30 kg
explanation: I did the the test
Plug in the value of -2 and -8
(-2)^2 - (-8) + 1
4 + 8 + 1 = 13
