Listed below are speeds(mi/h) measured from traffic on a busy highway. The simple random sample was obtained at 3:30 pm on a weekday. Use the sample data to construct a 90% confidence interval estimate of the population standard deviation. 61,64,64,55,64,53,60,59,60,70,62,68

The function y= x - 4x+ 5 approximates the height, y, of a bird, and its horizontal distance, x, as it flies from one fence post to another. all distances are in feet. complete the square to find and interpret the extreme value (vertex). select two answers: one extreme value and one interpretation.

The hockey team has been great! in 2008 they won 20% more games than in 2007. in 2009 they won 50% more games than in 2008. what was their overall percentage increase from 2007 through 2009?

If bill bought a home for $210,000 and he sold it a year later for $120,000 his percentage of loss is