Help! Senior Grades

<p>So I currently have a C+ in BC calc (should hopefully be able to get it up to a B/B- but it will still be low. All of my other grades are A's and my GPA is a 3.9...how much is this going to hurt at top schools?</p>

<p>I actually have a similar question. How important are senior year grades? Mine are fine right now, but I'm curious.</p>