Evaluate the expression.
A. 30
B. 
C. 
D. 2!
Answer: C
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Use a calculator to approximate the area of the surface generated when the given curve is revolved about the x-axis. Round to two decimal places when necessary.y = sinx on 
A. 1.15 B. 7.65 C. 13.39 D. 5.1
A couple is planning to have four children. Suppose that for this couple the probability of a boy is 46% and the probability of a girl is 54%. (Assume the gender of each child is independent from that of the other children.)What is the probability that they will have an equal number of boys and girls?
A. 0.462 × 0.542 B. 0.462 + 0.542 C. 6 × 0.462 × 0.542 D. 4 × 0.462 × 0.542 E. none of these
Name the quadrant, if any, in which the point is located.(6, 15)
A. Quadrant II B. Quadrant IV C. Quadrant III D. Quadrant I
Use a grapher to help determine whether or not the given functions are inverses of each other.f(x) = 1.1x3 + 1.4; g(x) = 
A. Yes B. No