Ashipping company charges a flat rate of $7 for packages weighing five pounds or less, $15 for packages weighing more than five pounds but less than ten pounds, and $22 for packages weighing more than ten pounds. during one hour, the company had 13 packages that totaled $168. the number of packages weighing five pounds or less was three more than those weighing more than ten pounds. the system of equations below represents the situation. s+m+i= 13 7s+15m+22i=168 s-i=3 which matrix can be used to show the number of packages in the different weight classes during that hour?

Aflute is on sale for 20% off. including the discount and 8% tax, the sales price is $216.

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.

In an improper fraction, is the numerator equal to, less than, or greater than the denominator