Solve the problem.At age 50, Ann must choose between taking $21,000 at age 60 if she is alive then, or $31,000 at age 70 if she is alive then. The probability for a person aged 50 living to be 60 and 70 is 0.85 and 
, respectively. Using expected value, what is Ann's best option?
A. $31,000 at age 70
B. $21,000 at age 60
Answer: A
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Give an appropriate answer.A bee was flying downward along the curve that is the intersection of 
with the plane y = 1. At the point 
the bee went off on the tangent line. Where did the bee hit the yz-plane?
A. (1, 0, -19) B. (0, 1, 25) C. (0, 1, -8) D. (0, 1, -19)
Provide an appropriate response.When the first-in, first-out inventory method is used, inventory values are based on the average cost of each inventory item.
A. True B. False
Solve the problem.Two boats leave a dock at the same time. One boat is headed directly east at a constant speed of 35 knots (nautical miles per hour), and the other is headed directly south at a constant speed of 22 knots. Express the distance d between the boats as a function of the time t.
Fill in the blank(s) with the appropriate word(s).
Divide. Write a mixed numeral for the answer whenever possible.-27 ÷ 2
A. -11
B. -12
C. -10
D. -13