Classify the given angle as right, acute, or obtuse.
A. obtuse angle
B. right angle
C. acute angle
Answer: C
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Find a formula for the nth term of the sequence.0, 2, 2, 2, 0, 2, 2, 2 (0, 2, 2, 2 repeated)
A. an = 1 + (-1)n(n+1)(n+2)/6 B. an = 1 + (-1)(n+1)(n + 2)/2 C. an = 1 + (-1)n(n-1)/2 D. an = 1 + (-1)n(n+1)/2
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
Name the conic.
A. circle B. ellipse C. hyperbola D. parabola
Solve.The amount of paint needed to cover the walls of a room varies jointly as the perimeter of the room and the height of the wall. If a room with a perimeter of 50 feet and 
walls requires 
of paint, find the amount of paint needed to cover the walls of a room with a perimeter of 70 feet and 8-foot walls.
A. 5.6 quarts B. 560 quarts C. 11.2 quarts D. 56 quarts