Solve the problem.A cake is removed from an oven at 325 °F and cools to 150 °F after 25 minutes in a room 68 °F. How long will it take the cake to cool to 104 °F?
A. 43 min
B. 55.9 min
C. 25.8 min
D. 77.4 min
Answer: A
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Solve the problem.The angle of elevation from the top of a house to a plane flying 6300 meters above the house is x radians. If d represents the horizontal distance, in meters, of the plane from the house, express d in terms of a trigonometric function of x.
A. d = 6300 sec x
B. d = 6300 cot x
C. d = 6300 tan x
D. d = 
Simplify.6 ? 7 + 8(7 - 2) + 1
A. 97 B. 451 C. 83 D. 90
Write the first three terms in the binomial expansion, expressing the result in simplified form.(3x + 2y)8
A. 8x8y + 7x7y2 + 6x6y3 B. 6561x8y + 34,992x7y2 + 81,648x6y3 C. 6561x8 + 34,992x7y + 81,648x6y2 D. 8x8 + 7x7y + 6x6y2
Solve the problem.A middle school's baseball playing field is a square, 55 feet on a side. How far is it directly from home plate to second base (the diagonal of the square)? If necessary, round to the nearest foot.
A. 78 feet B. 77 feet C. 85 feet D. 79 feet