If the moment generating function of x is m(t) = 2/5e^t + 1/5e^2t + 2/5e^3t find the mean, variance and pmf.

Acable car begins its trip by moving up a hill. as it moves up, it gains elevation at a constant rate of 50 feet/minute until it reaches the peak at 2,000 feet. then, as the car moves down to the hill’s base, its elevation drops at the same rate.

Ben bowled 124 and 188 in his first two games. what must he bowl in his third game to have an average of at least 160?

Abox of chocolates costs $7. which equation relates the number of boxes sold (x) and total cost of the boxes sold (y)?