Calculate the binomial coefficient: 
A. 30
B. 1
C. 12
D. 0
E. 15
Answer: E
Mathematics
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Solve the problem.The decibel level D of a sound is related to its intensity I by 
. If I0 is 10-12, then what is the intensity of a noise measured at 50 decibels? Express your answer in scientific notation, rounding to three significant digits, if necessary.
A. 5 × 10-10 watt/m2 B. 1 × 10-6 watt/m2 C. 1.48 × 1014 watt/m2 D. 1 × 10-7 watt/m2
Mathematics
Find the area of the region specified in polar coordinates.One leaf of the rose curve r = 8 cos 3?
A. 
?
B. 
?
C. 32?
D. 16?
Mathematics
Find the indicated term of the geometric sequence.a11 when a1 = 2000 and r = 
.
A. 
B. 
C. 2005
D. 
Mathematics
Determine the slope and y-intercept of the function.f(x) = 
x - 3
A. m = - 
; b = 3
B. m = 4; b = 3
C. m = - 3; b = 
D. m = 
; b = - 3
Mathematics