Find the exact value of the expression if ? = 45°. Do not use a calculator.g(?) = sin ?Find 4g(?).
A. -2
B. 2
C. 4
D. -4
Answer: B
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Find the probability.A die is rolled 20 times and the number of twos that come up is tallied. Find the probability of getting exactly two twos. Round to the nearest thousandth when necessary.
A. 0.011 B. 0.159 C. 0.116 D. 0.198
Graph the parabola and label the vertex. Find the x-intercept.x = -2(y + 3)2 - 1
A. vertex (-1, -3), x-intercept (17, 0)
B. vertex (1, -3), x-intercept (-19, 0)
C. vertex (1, -3), x-intercept (19, 0)
D. vertex (-1, -3), x-intercept (-17, 0)
Find the conjugate of the complex number. Then multiply the complex number by its conjugate.-8 - 6i
A. -14; 100 B. -8 + 6i; 100 C. -2; 100 D. -8 - 6i; 100
Solve the problem.The number of bacteria growing in an incubation culture increases with time according to B = 3200(2)x, where x is time in days. Find the number of bacteria when 
and 
A. 3200; 25,600 B. 6400; 51,200 C. 3200; 51,200 D. 3200; 12,800