Rationalize the denominator and simplify.
A. 17
B. 1
C. 17
D. 
Answer: D
Mathematics
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Identify the equation as either an identity or not.sin ? sec ? = cos ? csc ?
A. Not an identity B. Identity
Mathematics
Solve the problem.An economist predicts that the buying power B(x) of a dollar x years from now will decrease according to the formula B(x) = 0.51x. How much will today's dollar be worth in 7 years? Round the answer to the nearest cent.
A. $0.62 B. $2.70 C. $3.57 D. $0.01
Mathematics
Evaluate.
A. 42
B. 
C. 
D. 2!
Mathematics
Solve the inequality. Write the solution in interval notation.
? 0
A. [-4, 0) ? (0, 4] B. (-?, -4] ? (0, 4] C. [-4, 0) ? [4, ?) D. (-?, -4] ? [4, ?)
Mathematics