Find the length of the curve.The line segment r = 8 sec ?, 0 ? ? ? 
A. 8
B. 8 ln
C. 
D. 4(
+ ln(
+ 1))
Answer: A
Mathematics
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Solve the problem.Use the formula L = 10 ? log 
, where the loudness of a sound in decibels is determined by I, the number of watts per square meter produced by the soundwave, and 
A certain noise produces 6.35 × 10-4 W/m2 of power. What is the decibel level of this noise?
A. 203 dB B. 78 dB C. 88 dB D. 9 dB
Mathematics
Solve the equation for the indicated variable.
= z for y
A. y = 
B. y = 
C. y = 
D. y = 
- z
Mathematics
Solve the problem.A certain club initially has 100 members and membership increases by 5 members every month. If dues are 
what is the total amount of dues collected during the first year?
A. $7650 B. $7800 C. $7150 D. $6875
Mathematics
Solve.
= 15
A. 224 B. 56 C. -112 D. 112
Mathematics