Tracy is saving to buy a new guitar that costs $253.77 (including tax). tracy has saved $136.27, and she can save $23.50 each week.

how many more weeks will it take her to save enough money?
2 weeks
5 weeks
7 weeks
10 weeks

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.