Which describes the difference between the graph of f(x) = 2x3 - 8x + 3 and g(x) = x3 - 4x? a) the graph of g(x) is obtained by shifting f(x) up 3 units and stretching vertically by a factor of 2. b) the graph of f(x) is obtained by shifting g(x) up 3 units and stretching vertically by a factor of 2. c) the graph of g(x) is obtained by shifting f(x) right 3 units and compressing vertically by a factor of 2. d) the graph of f(x) is obtained by shifting g(x) right 3 units and compressing vertically by a factor of 2.

Liz had 140 pens and inna had 100 pens. after inna gave liz some pens, liz had 3 times as many pens as inna. how many pens did inna give liz?

Which of the following three dimensional figures has a circle as it’s base

Aprisoner is trapped in a cell containing three doors. the first door leads to a tunnel that returns him to his cell after two days of travel. the second leads to a tunnel that returns him to his cell after three days of travel. the third door leads immediately to freedom. (a) assuming that the prisoner will always select doors 1, 2 and 3 with probabili- ties 0.5,0.3,0.2 (respectively), what is the expected number of days until he reaches freedom? (b) assuming that the prisoner is always equally likely to choose among those doors that he has not used, what is the expected number of days until he reaches freedom? (in this version, if the prisoner initially tries door 1, for example, then when he returns to the cell, he will now select only from doors 2 and 3.) (c) for parts (a) and (b), find the variance of the number of days until the prisoner reaches freedom. hint for part (b): define ni to be the number of additional days the prisoner spends after initially choosing door i and returning to his cell.