The fair market rental rate for Columbus was $630 in 2013 and $551 in 2003. Find the rate of change for rent in Columbus during this period.

Mr. brettler is hanging up a 5-foot tall rectangular welcome sign in the gym. he has drawn a sketch on a coordinate grid. he has the lower vertices of the sign at (9, –3) and (–6, –3). where would the upper vertices be on the grid?

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).

Marcus and cody both leave the park at the same time, but in opposite directions. if cody travels 6 mph faster than marcus and after 4 hours they are 64 miles apart, how fast is each traveling? solve using rare times time = distance.