algebra
posted by kevin .
it's asking to identify a pattern and find the next number in the pattern.
1.) 31,24,17,10
4
3
2
3
2.) 0,4,2,10,50
450
250
5
50
If someone could help would appreciate but would like an explanation on how you get it so I can learn. Thanks ahead.

#1: each number is 7 less than the previous one. So, 3 is next
#2: I think 0,4 is meant to be 0.4, or 2/5. If so, then each number is 5 times the previous one. Next is 250
The European decimal point is a comma, so using it in a sequence of values separated by commas is dangerous.