Solve the problem.A cruise boat travels 60 miles downstream in 4 hours and returns to its starting point upstream in 6 hours. Find the speed of the stream.
A. 27.5 mph
B. 2.5 mph
C. 12.5 mph
D. 15 mph
Answer: B
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Solve the problem.The Mathematics Department is holding an election for department chair. Each member ranks the candidates from first to third. The voter profile below shows the results of the ballots with candidates Clark (C), Jones (J), and Smith (S). 
Determine the winner using the pairwise comparison method and state whether the winner received a majority of votes.
A. Smith; yes B. Jones; yes C. Jones; no D. Smith; no
FInd the tangential and normal components of the acceleration.r(t) = (t - 7)i + (ln(sec t) - 7)j + 9k, -?/2 < t < ?/2
A. a = (sec t tan t)T + (sec t)N B. a = (csc t)T + (sec t)N C. a = (sec2 t)T + (cos t)N D. a = (cos t)T + (cos t)N
Decide whether the expression is or is not an identity.tan (A + 2?) = -tan A
A. Not an identity B. Identity
Fresh from Nature, Inc., has several lines of heat-and-eat frozen foods sold in grocery stores. These include the Auntie Jean line of American-style casseroles, the Tia Juana line of Mexican foods, and the Oma Gertie line of German and East European dishes. Fresh from Nature contracts with a dozen producers of organic beef, pork, and chicken which it provides to all three food lines. This is an example of ____ relatedness.
A. economic B. corporate C. operational D. competency