Leroy took a trip to Alaska. His airfare was $243 and he spent $72 each day while he was there. Which expression can he use to help him find the cost of the trip?
(x = number of days spent in Alaska) *
1. 72x + 243
2. 72x + 243x
3. 243 + 72
4. 243x + 72
.

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.

If the discriminant if a quadratic equation is 4 which statement describes the roots?

Graph the equationy=x^2 -[tex]y = x^{2} - 2[/tex]