Determine whether the statement is true or false. If the statement is false, make the necessary change(s) to produce a true statement.

If an event is certain to occur, its probability is 1.

What is the product of the radical expression. (7-2square root) (8+2 square root)

The table shows the balance of a money market account over time. write a function that represents the balance y (in dollars) after t years.

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.