DETAILS OSCALC1 3 Describe what each expression represents in terms of the given situation Be sure to include units f x denotes the grade in percentage points received on a test given x hours of studying a f x h f x h Select b f x lim h o Rate in rate of change of the grade received on a test per extra x h f x h Select Select spent studying 1 at which the grade on the test increased or decreased for a given study time of x Sole