in 1995, 57.5% of students at Gardiner university graduated in 4 or fewer years of study. in 2009, that number had fallen to 52.8%. what was the rate of change for percent of students graduating within 4 years from 1995 to 2009.
I got 14/4.7%
check my answer

Question

in 1995, 57.5% of students at Gardiner university graduated in 4 or fewer years of study. in 2009, that number had fallen to 52.8%. what was the rate of change for percent of students graduating within  4 years from 1995 to 2009. 
I got 14/4.7%
check my answer

mathmale · Answer

The average rate of change (which is what you're seeking) over that four year period
                 52.8% - 57.5%
would be   --------------
                           4

Note that it'd be negative because the graduation rate dropped.

anonymous · Answer

did I get it right?

mathmale · Answer

I'd rather that you check that out, Kaitlin.  Please subtract 57.5% from 52.8%.  Then divide that difference by 4.

anonymous · Answer

so its 1.175

mathmale · Answer

Yes, Kaitlin.  Very good.  But remember that that result MUST be negative, since the grad rate dropped over that four year period.

anonymous · Answer

ok, so the answer is -1.175?

mathmale · Answer

Yes.  Why not make it perfect by stating "-1.175% per year"?

anonymous · Answer

thanks

mathmale · Answer

My pleasure.  Wanted to help you build faith in your ability to check your own results.
Good luck to you!