Asalesman has scheduled two appointments to sell encyclopedias. his first appointment will lead to a sale with probability .3, and his second will lead independently to a sale with probability .6. any sale made is equally likely to be either for the deluxe model, which costs $1000, or the standard model, which costs $500. determine the proba- bility mass function of x, the total dollar value of all sales.

hello from mrbilldoesmath!

answer:   x (x+6)^2, choice b

discussion:

factor x out of the equation:

x^3 + 12x^2 + 36x = x (x^2 + 12x + 36).

note that 6+6 = 12 and 6*6 = 36 so the above factors into:

x (x+6)^2

which is choice b

you,

mrb

answer by jkismyhusbandbae:

a) how close a measured value is to the actual (true) value.

  measure of length.   there are 12 inches in a foot, and 36 inches in a yard.   one inch is exactly 2.54 centimeters.

accuracy is how close something is to an actual answer but it is not exactly correct.