Kyle was trying to improve his time in the 200 meter dash. He started at 30.5 seconds, then ran 29.9 seconds, 29.4 seconds and 29 seconds. If he continues practicing, what is a reasonable prediction for his next time?

Question

anonymous · Answer

30 seconds
		
28.7 seconds
		
26 seconds
		
28 seconds

anonymous · Answer

Find the difference from one time to the next. See if there is a pattern.

anonymous · Answer

30.5 -29.9=.6
29.9-29.4=.5
29.4-29=.4
hence next time it will be 29 - 0.3 =28.7