Solve the problem.Suppose you purchase a 10-year muni bond for $8000. The face value of the bond when it matures is $12,300. Find the APR.
A. 5%
B. 
%
C. 5.375%
D. 5.5%
E. 
Answer: C
Mathematics
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Perform the indicated operation. Assume that all variables represent nonnegative real numbers.-5k
- 5
A. -5k
- 10
B. -15
C. -45k
D. -15k
Mathematics
Solve the problem.The level of a sound in decibels (db) is determined by the formula 
where I is the intensity of the sound in watts per square meter. What is the intensity of a noise measured at 53 db? Express the answer in scientific notation, rounded to two decimal places.
A. 5.30 × 10-10 watt/m2 B. 2.00 × 10-6 watt/m2 C. 2.00 × 1014 watt/m2 D. 2.00 × 10-7 watt/m2
Mathematics
Prove the identity.
= 2sec2 - 1
What will be an ideal response?
Mathematics
State the domain of the given function.f(x) = 
A. {x|x ? -6} B. {x|x ? 6} C. {x|x ? -6} D. {x|x ? 6}
Mathematics