Which statement best describes how to determine whether f(x) =9-4x IS an odd function ? O Detemine whether 9-4(-x) is equivalent to 9-4x
O Determine whether 9-4(-)is equivalent to 9+4x
O Determine whether 9- 4(-x) is equivalent to -(9 4x
O Detemine whether 9-4(-)is equivalent to (9 +4x)

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.