9. The dimensions of a rectangular prism are represented by binomials, as shown. a) Write a simplified expression that represents the surface area of this prism. (n+4 W H (n-3) (2n+3) L +216 (775) +2(4x5) +2 (75) b) Write a simplified expression that represents the volume of this prism. SA=2+3)+4 2 2(2n +114+12) + 2(6+ 4-12)+2(24-34-9) If n represents 6.5 cm, what are the surface area and volume of the prism? = 2 471 +221 +2. 42