A cellphone tower casts a shadow 30 feet long at the same time that a man 6 feet tall
cast a shadow of 2.4 feet. How tall is the
cellphone tower?

At which value in the domain does f(x) =0?

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.

Twelve less than a number is at most 20