A keyboarding instructor at a community college collected
data comparing a student’s age and their typing speed. The
equation for the line of best fit is given as y = -1.4x + 117.8,
where x is the “age in years” and y is the “typing speed.
If you are 25 years of age, what is your typing speed?

A.
153 words per minute

B.
83 word per minute

C.
63 words per minute

D.
102 words per minute

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.