Write the complex number in trigonometric form r(cos ? + i sin ?), with ? in the interval [0°, 360°).5
+ 5i
A. 10(cos 60° + i sin 60°)
B. 10(cos 330° + i sin 330°)
C. 10(cos 30° + i sin 30°)
D. 10(cos 150° + i sin 150°)
Answer: C
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Evaluate the surface integral of the function g over the surface S.G(x, y, z) = 
; S is the surface of the parabolic cylinder 10y2 + 2z = 14 bounded by the planes 
x = 1, y = 0, and z = 0
A. 
B. 
C. 
D. 
Find the modulo class to which the number belongs for the given modulo system.87, mod 9
A. 5 B. 3 C. 7 D. 6
Solve the problem.Use Newton's Law of Cooling to find the temperature in the following case. A loaf of bread is removed from an oven at 
and cooled in a room whose temperature is 
. If the bread cools to 
in 20 minutes, how much longer will it take the bread to cool to 
A. ? 16 minutes B. ? 23 minutes C. ? 3 minutes D. ? 4 minutes
Four players (A, B, C, and D) agree to divide the 12 items below using the method of markers. The players' bids are as indicated.
Item 12
A. goes to A. B. goes to B. C. goes to C. D. goes to D. E. is left over.