Find the following.Find -x when x is 0.
A. -7
B. -1
C. 0
D. 1
Answer: C
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Solve the problem.Within a group of n people, the number of possible handshakes, N, is given by 
How many handshakes are possible at a meeting if 24 people are present?
A. 552 handshakes B. 276 handshakes C. 264 handshakes D. 300 handshakes
Solve the right triangle shown in the figure. Round lengths to one decimal place and express angles to the nearest tenth of a degree. 
a = 3.2 cm, b = 1.9 cm
A. A = 59.3°, B = 30.7°, c = 3.7 cm B. A = 54.8°, B = 35.2°, c = 3.7 cm C. A = 30.7°, B = 59.3°, c = 3.7 cm D. A = 36.4°, B = 53.6°, c = 5.1 cm
Assume that the expressions given are the denominators of fractions. Find the least common denominator. q + r, q - r, q2 - r2
A. q(q - r) B. (q + r)(q - r) C. (q + r)2(q - r)2 D. r(q + r)
Evaluate, if possible
A. Not a real number
B. 11
C. 
D. 14,641