1) The graph of a function f is shown below. Use the zeros and the turning
points of the graph to find the rule for f.
F(x) = x4 - 8x2 + 16
® f(x) = -x4 + 5x2 - 4
© f(x) = x3 + x2 - 4x + 4
f(x) = x4 - 5x2 + 4
o

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.