Solve the problem.A company knows that the unit cost C and the unit revenue R from the production and sale of x units are related by 
Find the rate of change of unit revenue when the unit cost is changing by 
and the unit revenue is $4000.
A. $373.20/unit
B. $557.90/unit
C. $260.00/unit
D. $188.50/unit
Answer: D
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Add. Simplify, if possible.
+ 
A. 3m + 3
B. 
C. 
D. 
Evaluate the expression for the given values.(c - 2ab)2, if a = 2, b = -4, and c = 4
A. 400 B. 40 C. 144 D. -400
Answer the following statement(s) true (T) or false (F)
1. If two triangles are congruent, then they are similar. 2. If three sides of one triangle are congruent to three sides of a second triangle, then the triangles are similar. 3. If PQ is the altitude to the hypotenuse, AM, in right triangle ?PAM, then PQ is the mean proportional of AQ and MQ. 4. Every triangle has exactly one midsegment. 5. In ?PXR, if ?R is a right angle, then tan X = XR / RP
Find the area.Each square represents one square unit.
A. 40 square units B. 30 square units C. 36 square units D. 34 square units