Which of the following describes exponential decay? A: The amount at a given time can be calculated by subtracting an amount from the previous amount.
B: The amount at a given time can be calculated by multiplying the previous amount by a value greater than 1.
C: The amount at a given time can be calculated by multiplying the previous amount by a value less than 1.
D: The amount at a given time can be calculated by adding an amount to the previous amount.

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.

Aefg - almn. find the ratio of aefg to almn. a)1: 4 b)1: 2 c)2.1 d)4: 1

What is always true when two whole numbers are subtracted?