Find all possible formulas of the form y = A sin t + k or y = A cos t + k for the periodic functions with the given properties (there may be more than one): Midline y = -1, amplitude 0.5 with . (5 pts.). 3) State the period, amplitude, midline, and horizontal shift of . (6 pts.)f ( ) = 12 cos 8 6 2 y t = + ( )