Solve.A polygon with n sides has D diagonals, where D is given by the function D(n) = 
. Find the number of sides n if 54 ? D ? 170.
A. {n|13 ? n ? 20}
B. {n|10 ? n ? 21}
C. {n|12 ? n ? 20}
D. {n|11 ? n ? 21}
Answer: C
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If possible, evaluate the function at the given value of the variable.f(x) = 
+ 
at x = 16
A. 9 B. 3 C. 7 D. 6
Approximate the surface area of the figure using 3.14 for ?. If necessary, round to the nearest tenth.
A. 854.1 in.2 B. 477.3 in.2 C. 1155.5 in.2 D. 238.6 in.2
Solve the problem.Suppose a continuous random variable has a joint probability density function given by src="https://sciemce.com/media/4/ppg__sdsd0530191715__f1q34g6.jpg" style="vertical-align: -23.0px;" />
A. 0.375
B. 0.225
C. 0.250
D. 0.275
Find the probability that a point (x, y) is in the region bounded by 
and 
by evaluating the integral
Combine like terms, if possible.q3 - 3q4 + 6q2 + q4 + 11q3
A. Not possible B. -2q8 + 12q6 + 6q2 C. -2q4 + 12q3 + 6q2 D. -3q4 - q3 + 6q2