Marshall, hank, and jean are all cousins. marshall is 3 years older than hank. hank is twice the age of jean.

a) write expressions to represent the ages of the cousins. assign the variable j to represent jean.

b) if jean is 12 years old, how old are the other cousins?

c) if hank was 14, how old would jean be?

Which ordered pair (c,d) is a solution to the given system of linear equations- c+2d=13 -9c-4d=-15

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.

Leslie started last week with $1200 in her checking account. during the week, she wrote the checks below.