Locate and classify any critical points. (Round your numerical answers to three decimal places. Order your answers from smallest to largest s.) R(s, t)-1 .1s3-2.4s2 + 0.9s+ 4-3. 1t2 + 5.3t (s, t, R(s, t)) = relative maximum â¼ (s, t, R(s, t)) = saddle point