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a hammer thrower is competing in a track and field meet. he rotates exactly 5 times in 2π seconds, and the motion of his hammer is represented by a sine function.
which function rule could model this situation?
(c is wrong)
f(x)=5π sin x
f(x)= sin(5x)
f(x)=5 sin x
f(x)= sin(1/5x)

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.