Explain how you know if a system of equations has one solution, no solutions, or infinitely many solutions. Write your answers (3) in Complete Sentences.

How do i work this problem out using the equation a=pe^rt

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?

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.