Use the fundamental identities to simplify the expression.
+ cos x sec x
A. csc x
B. cot2 x
C. csc2 x
D. sec2 x
Answer: C
Mathematics
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Solve the problem.Using a phone card to make a long distance call costs a flat fee of $0.25 plus $0.12 per minute starting with the first minute. What is an equation of the form 
for this situation?
A. y = 0.25x B. y = 0.25x + 0.12 C. y = 0.12x + 0.25 D. y = 0.12x
Mathematics
Assume that the sequence converges and find its limit.a1 = 4, an + 1 = 
A. -4 B. 16 C. 4 D. 1
Mathematics
Add.7.8 + (-8.8)
A. 1 B. -1 C. 16.6 D. -16.6
Mathematics
Using transformations, sketch the graph of the requested function.The graph of a function f is illustrated. Use the graph of f as the first step toward graphing the function F(x), where 
A. 
B. 
C. 
D. 
Mathematics