Solve the problem.The cost of producing t units is C = 3t2 + 7t, and the revenue generated from sales is R = 4t2 + t. Determine the number of units to be sold in order to generate a profit.
A. t > 7
B. t > 8
C. t > 6
D. t > 0
Answer: C
Mathematics
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Find 
and 
.f(x, y) = xye-y
A. 
= ye-y; 
= xe-y(y - 1)
B. 
= ye-y; 
= xe-y
C. 
= ye-y; 
= xe-y(1 - y)
D. 
= ye-y; 
= - xye-y
Mathematics
Describe the set of points (x, y, z) defined by the equation.z = 0
A. All points of the form (x, y, 0) B. All points of the form (x, 0, 0) C. All points of the form (0, y, 0) D. Only the point (0, 0, 0)
Mathematics
Classify the requested angle shown in the figure below, where l?1 and l?2 are parallel.
?
?CBA if m ? 16 is 120°
?
?
The angle is __________.
Fill in the blank(s) with the appropriate word(s).
Mathematics
Compute the product.
A.
B. 
C. 
D. not defined
Mathematics