Carly's dog, Rex, is five years old. • At the end of his first year, Rex weighed
15.3 kilograms.
By the end of his second year, he
gained 4.2 kilograms.
• He lost 1.7 kilograms by the end of his
.
third year.
• He lost 0.5 kilogram the next year.
• In his fifth year, he gained 1.7 more
kilograms.
Which equation represents Rex's current
weight in kilograms?

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.

Technicians have installed a center pivot, circular irrigator for a farm that covers 25 acres. a.) how long is the irrigation boom (in feet) from the center pivot to its farthest extent? b.) if the irrigation boom makes 4 full revolutions in a day, how many miles does the end of the boom travel in 5 days?

Write the factored form of this trinomial 9x^2+18x-7