The sum of two numbers is 20. twice one number is 4 more than four times the other

Which of the following would represent the sum of 3 consecutive integers if x is the first integer?

Which of the fallowing best completes the sequence 12,8,5, a) 1 b) 2 c)4 d)0

At the olympic games, many events have several rounds of competition. one of these events is the men's 100-meter backstroke. the upper dot plot shows the times (in seconds) of the top 8 finishers in the final round of the 2012 olympics. the lower dot plot shows the times of the same 8 swimmers, but in the semifinal round. which pieces of information can be gathered from these dot plots? (remember that lower swim times are faster.) choose all answers that apply: a: the swimmers had faster times on average in the final round. b: the times in the final round vary noticeably more than the times in the semifinal round. c: none of the above.