In a certain game, we have to select one of three cards at random from an envelope. If we choose the green card, we win $120. If we pick the yellow card, we win nothing, and if we choose the red card, we lose $360. Assume that we are equally likely to pick any of the cards. How much money do we expect to win/lose on average

(a) the volume of the cone is 20/3 in3

hence, option a is correct.

answer: bea's uncle is 25 years old.

step-by-step explanation:

given the equation , we can say that the variable "x" represents the age of bea's uncle. then to find his age, we need to solve for "x":

we must add 15 to both sides of the equation:

now we need to divide both sides of the equation by 3:

therefore, we can conclude that bea's uncle is 25 years old.

step by step solution :

step   1   :

1.1     4 = 22

(4)3 = (22)3 = 26

equation at the end of step   1   :

  ((23) • 26)2

step   2   :

equation at the end of step   2   :

  (23 • 26)2

step   3   :

final result :

  218

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