Problem solving a contestant on a game show has 30 points. she answers a question correctly to win 15 points. then she answers a question incorrectly and loses 25 points. what is the contestant's final score?

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.

What is the inverse of the function f(x) = 2x + 1?

Which two undefined geometric terms always describe figures with no beginning or end?