Suppose a pharmaceutical corporation has two plants that produce the same over-the-counter medicine. If x1 and x2 are the numbers of units produced at plant 1 and plant 2, respectively, then the total revenue for the product is given by 
. When 
and
src="https://sciemce.com/media/2/ppg__cognero__Section_13.3__media__6e0d53ee-6bbb-4d74-9bf0-167dd5b004e2.PNG" class="wirisformula" align="middle" style="vertical-align: middle;" data-wiris-created="true" varid="variable_id_field" variablename="impvar_190851fbe60a426abe63a93b1" /> find the marginal revenue 
for plant 1.
?
A. 172
B. 170
C. 80
D. 122
E. 91
Answer: C
Mathematics
src="https://sciemce.com/media/2/ppg__cognero__Section_13.3__media__6e0d53ee-6bbb-4d74-9bf0-167dd5b004e2.PNG" class="wirisformula" align="middle" style="vertical-align: middle;" data-wiris-created="true" varid="variable_id_field" variablename="impvar_190851fbe60a426abe63a93b1" /> find the marginal revenue for plant 1.
?
A. 172
B. 170
C. 80
D. 122
E. 91
Answer: C
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Provide an appropriate response.Use the law of sines to solve the triangle ABC if a = 23, b = 12, and A = 49°. If there are two possibilities, find both solutions. Round sides to four significant digits and angles to the nearest 
A. B = 25.6°, C = 105.4°, c = 29.38; B = 23.2°, C = 107.8°, c = 29.02 B. B = 23.2°, C = 107.8°, c = 29.02 C. B = 25.6°, C = 105.4°, c = 29.38 D. no solution
Solve the equation.4x3 - 9x = 0
A. 
, - 
, 0
B. - 
C. 
D. 
, - 
Use an analytic method to solve the equation.5x-2 - 23x-1 - 10 = 0
A. 
B. 
C. 
D. 
Use the circle graph to answer the question.Last year, one family ate fast food 576 times. The circle graph shows the types of food eaten for the year. Find the number of times fish was eaten.
A. 144 times B. 36 times C. 192 times D. 72 times