If the supply function for x units of a commodity is 
dollars, what is the producer's surplus at 
? Round your answer to the nearest dollar.
?
A. $8,229
B. $1,969
C. $3,741
D. $1,559
E. $2,730
Answer: C
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Write the number in standard form a + bi.
A. -2 + i
B. -2 + i
C. -2 - i
D. -2 - i
Rationalize the denominator. Assume that all variables represent positive real numbers and that the denominator is not zero.
A. 4
B. 4
C. 
D. 
The Richter scale converts seismographic readings into numbers for measuring the magnitude of an earthquake according to this function M(x) = log 
, where x0 = 10-3.Find the magnitude (to one decimal place) of an earthquake whose seismographic reading is 2000 millimeters at a distance of 100 kilometers from its epicenter. Round the answer to the nearest tenth.
A. 6.4 B. 6.3 C. 5.9 D. 7.3
Simplify the expression using the order of operations. Write the answer as an improper fraction where appropriate.3 ? 5 - 54 ÷ 9
A. - 
B. 21
C. 0
D. 9