Find the exact value of the expression.
A. - 
B. -2
C. - 
D. -
Answer: D
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Find the limit.
A. 1 B. -? C. 0 D. ?
Find the flux of the vector field F across the surface S in the indicated direction.F = x2y4i + yj - zk; S is the portion of the parabolic cylinder z = 9 - y2 for which 
and 3 ? x ? 5; direction is outward (away from the x-y plane)
A. 0 B. 108 C. 54 D. -108
Solve the problem.The table shows the prizes and probabilities of winning (on a single $1 ticket) for a particular state lottery. 
How much would you expect to win or lose if you bought one $1 ticket every day for a year? Round to the nearest dollar.
A. Expected loss = $222 B. Expected loss = $238 C. Expected loss = $230 D. Expected gain = $143
Find the indicated measure of central tendency.The local Tupperware dealers earned these commissions last month:$2731.69$1461.75$2718.98$3873.16$4146.13$2266.86$3358.67$3834.28$3285.07$2634.84What was the mean commission earned? Round your answer to the nearest cent.
A. $3788.93 B. $3025.14 C. $3031.14 D. $3367.94