Which ones of the following are true (a) V (X ) = V (X ) (b) V (X ) = V (X ) (c) E(X ) = E(X ) (d) E(X ) = E(X ) (e) V (3X +5) = 3V (X )+5 (f) V (3X +5) = 9V (X ) (g) V (3X +5) = 9V (X )+5 (h) E(4X +9) = 4E(X )+9

(i) E(4X +9) = EV (X ) (j) E(4X +9) = 16E(X ) (k) V (2X 4Y +5) = 2V (X )46V (Y )+5 (l) V (2X 4Y +5) = 4V (X )+16V (Y )+5 (m) V (2X 4Y +5) = 4V (X )16V (Y )+5 (n) V (2X 4Y +5) = 4V (X )+16V (Y ) (o) V (2X 4Y +5) = 2V (X )46V (Y )+5 (p) V (2X 4Y +5) = 4V (X )+16V (Y )+5 (q) V (2X 4Y +5) = 4V (X )16V (Y )+5 (r) V (2X 4Y +5) = 4V (X )+16V (Y ) Note: What is the general result?