Multiply.- 
? (-16)
A. 2
B. 
C. - 
D. -2
Answer: A
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Perform the indicated operation.A factor used in measuring the loudness sensed by the human ear is 
0.3, where I is the intensity of the sound and I0 is a reference intensity. Evaluate this factor for I = 3.3 × 10-6 W/m2 and I0 = 1.0 × 10-12 W/m2 to two significant digits.
A. 0.011 B. 0.023 C. 44 D. 90
Determine the domain and range of the relation.{(8, 7), (6, 4), (-7, 8), (10, 3), (-1, -2)}
A. Domain: {6, 7, -1, 4, 10}; Range: {8, 8, 3, -7, -2} B. Domain: {6, -1, 10, 8, -7}; Range: {7, 4, 8, 3, -2} C. Domain: {8, 8, 3, -7, -2}; Range: {6, 7, -1, 4, 10} D. Domain: {7, 4, 8, 3, -2}; Range: {6, -1, 10, 8, -7}
Solve the problem.A company that produces radios has costs given by the function 
, where x is the number of radios manufactured and C(x) is measured in dollars. The average cost to manufacture each radio is given by 
(x) = 
. Find 
(200). (Round to the nearest dollar, if necessary.)
A. $29 B. $140 C. $28 D. $130
For the problem below, ? is a central angle in a circle of radius r. Find the length of arc s cut off by ?. ? ?= 30°, r = 2 mm. ? If the answer needs rounding, round it to three significant digits. ? s = __________ mm
What will be an ideal response?