A group of four friends each mowed lawns after
school and on the weekends for a month. The
total number of lawns mowed can be represented
by the equation below.
1x + 1 x + 1/ 8x + 16 = 49
Each friend is represented by a term in the
equation. How many lawns, x, did the first friend
mow?
A. 11
B. 18
C. 27
D. 31/

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.