1. Matrix question, finding {x,y,z} for = kI
2. Volumes of revolution, integrating 2-y to get 5700kg, curve not likely to be accurate, a good model since it's close
3. Series question, n/3(4n^2-1), some large number for sum of squares from 101-999
4. Matrix multiplication question, C = BA not AB, multiply to get C
5. Vectors: Prove perpendicular, find the position of B which is on l2 (which intersects plane)
6. Roots of polynomials: let w = 3x-1, quartic equation has roots alpha, 2alpha, alpha-beta