Solve the problem.A polygon with n sides has D diagonals, where D is given by the function D(n) = 
. Find the number of sides n if 77 ? D ? 135.
A. The number of sides is between 13 and 19, inclusive.
B. The number of sides is between 15 and 18, inclusive.
C. The number of sides is between 12 and 19, inclusive.
D. The number of sides is between 14 and 18, inclusive.
Answer: D
Mathematics
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Find the decimal equivalent of the fraction.
A. 1.
B. 1.2
C. 1.1
D. 1.
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Use the graph to find a ? > 0 such that for all x, 0 < 
< ? ? 
< ?.
A. 0.865 B. 0.4481 C. 0.46 D. 0.4169
Mathematics
Solve the problem.A railroad tunnel is shaped like a semiellipse. The height of the tunnel at the center is 25 ft and the vertical clearance must be 
at a point 
from the center. Find an equation for the ellipse. 
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Mathematics
Evaluate the sum.
A. 597 B. 1365 C. 1364 D. 1349
Mathematics