Many students delay taking a QR course. Core course, writing, and history. However, waiting to take a QR course won't make it any easier. I think it's better to take a math course before too much high school math is forgotten. AP credits do not fulfill the QR requirement.
Many transfer credits do count, however.
Physics I and II, Chemistry II, all advanced Chemistry Classes, Field Ecology and Data Analysis, and Biomechanics all meet the QR requirement. Biology I and II require some familiarity with algebra, functions and interpreting graphs. These students may wish to take college algebra before taking a quantitative science course. At a minimum, students who fall in this category should be aware that some of the math used in biology and ecology may be difficult for them and that some review or extra work may be required. For more detailed information about the math needed for biology study, consult one of the faculty members in biology.