Solve the problem.Suppose the supply function of a certain item is given by 
and the demand function is 
Find the producer's surplus.
A. 
B. 8
C. 16
D. 
Answer: B
Mathematics
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Use the vertical line test to determine if the graph is a function.
A. Yes B. No
Mathematics
Solve the differential equation.y ' + y tan x = cos x, -?/2 < x < ?/2
A. y = x sin x + c sin x, -?/2 < x < ?/2 B. y = x sin x + c cos x, -?/2 < x < ?/2 C. y = x cos x + c sin x, -?/2 < x < ?/2 D. y = x cos x + c cos x, -?/2 < x < ?/2
Mathematics
Change the logarithmic expression to an equivalent expression involving an exponent.log24 = x
A. 42 = x B. x2 = 4 C. 4x = 2 D. 2x = 4
Mathematics
Use the Half-angle Formulas to find the exact value of the trigonometric function. cos 
A. 
B. 
C. - 
D. - 
Mathematics