Every year Arlington has a citywide relay and reports the winning times. Winning relay times
Year Winning time (minutes)
2010
41
2011
37
2012
33
2013
28
2014
28
According to the table, what was the rate of change between 2011 and 2012?

What is x3+3x2−16x−48 divided by x−1?

Grace is standing 18 feet from a lighthouse and kelly is standing 10 feet from grace. the angle that grace looks up to see the top of the lighthouse is 45°. the angle that kelly looks up to see the top of the lighthouse is y°. find the height, h, of the lighthouse. find the angle, rounded to the nearest tenth of a degree, in which kelly looks up to the top of the lighthouse. to the nearest tenth of a degree, find the value of x° . in two or more sentences, explain your calculations

Given: δabc, m∠1=m∠2, d∈ ac bd = dc m∠bdc = 100º find: m∠a m∠b, m∠c