Evaluate and simplify.If f(x) = 
- x, find f(n + 2).
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Solve the problem.How many spanning trees does the following network have?
A. 3 B. 2 C. 4 D. 1 E. none of these
Mathematics
Solve the problem.Given that the polar equation r = 
models the orbits of the planets, estimate the closest approach of Pluto's orbit, for which 
and 
to the sun.
A. About 74 astronomical units B. About 30 astronomical units C. About 39 astronomical units D. About 50 astronomical units
Mathematics
Solve.n2 = 25
A. 5 B. -5 C. 0, 5 D. -5, 5
Mathematics
Find the vertices and graph the hyperbola.
- 
= 1
A. (-7, 0), (7, 0)
B. (-
, 0), (
, 0)
C. (0, -7), (0, 7)
D. (-5, 0), (5, 0)
Mathematics