Problem 8: Letf. R -R, g: R R, and h: R - R be functions defined by f(x)-r2, )+1), and h(x) -3x+1. For each of the following compositions, write the functionb:RR (a) b(x)hog (b) b(x) goh Problem 9: (a) Calculate an for n-4, 5 given the following (c) Write j! in 11 notation Problem 10: Given the following matrices: A-1 1 3-2 4-2 7 5 -2 Compute 4A +B (b) Compute CT Given the following matrices: (c) Calculate BA (d) Calculate AB