Solve the problem.Evaluate 
at t = 2? for the function w = x2 - y2 - 9x; x = cost, y = sin t.
A. -11
B. -13
C. 0
D. -7
Answer: C
Mathematics
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Find the median for the given values.4, 3, 25, 10, 28, 47, 33, 30
A. 28 B. 25 C. 22.5 D. 26.5
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Determine the convergence or divergence of the series. 
A. Converges B. Diverges
Mathematics
Solve the problem.A gas station sells 4820 gallons of regular unleaded gasoline on a day when they charge $1.35 per gallon, whereas they sell 3861 gallons on a day that they charge $1.40 per gallon. Find a linear function that expresses gallons sold as a function of price.
A. G(p) = -19,180p + 30,713 B. G(p) = -19,180p + 30,691.2 C. G(p) = -19,180p + 30,696.8 D. G(p) = -19,180p + 30,729
Mathematics
Simplify.13 × 2 + 3 × 12
A. 494 B. 62 C. 780 D. 348
Mathematics