Solve the problem.The number of hours of darkness in a coastal town can be modeled by 
, where x is the month and 
corresponds to January. Approximate the number of hours of darkness in April, to the nearest tenth of an hour.
A. 22.4 hours
B. 14.8 hours
C. 17.9 hours
D. 17.1 hours
Answer: B
Mathematics
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Factor by grouping.x3 - 2x2 + 9x - 18
A. (x2 + 9)(x - 2) B. x(x2 - 2x + 9) - 18 C. (x + 9)(x2 - 2x)(x - 2) D. (x2 - 2x) + 9(x - 2)
Mathematics
Construct a truth table to decide if the two statements are equivalent.~p ? ~q; ~(p ? q)
A. True B. False
Mathematics
If necessary, write the equation in the standard form ax2 + bx + c = 0. Then identify the values of a, b, and c. Do not actually solve the equation.3x2 = 14x - 21
A. a = 3, b = 14, c = -21 B. a = 3, b = -14, c = 21 C. a = 3, b = 14, c = 21 D. a = 3, b = -14, c = -21
Mathematics
Suppose that P is the endpoint of a segment PQ and M is the midpoint of PQ. Find the coordinates of endpoint Q.P(2, 8), M
A. Q
B. Q
C. Q(-9, 6)
D. Q
Mathematics