Perform the subtraction without converting to Hindu-Arabic numerals.
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Solve the problem.Find the number of units that must be produced and sold in order to yield the maximum profit, given the following equations for revenue and cost:R
= 6xC
= 0.01x2 + 1.2x + 90.
A. 720 units B. 360 units C. 240 units D. 480 units
Mathematics
Choose the polar equation that matches the graph.
A. r = 5 cos(?/4) B. r = 1 - 5 sin(4?) C. r = 1 - 5 sin(?/4) D. r = 1 - 5 cos(4?)
Mathematics
Simplify. (Assume all variables are nonzero.)80
A. 1 B. 8 C. 0 D. -1
Mathematics
Evaluate the integral.
A. 
x3 cos 9x + 
x2 sin 9x - 
x cos 9x - 
sin 9x + C
B. 
x3 sin 9x + 
x2 cos 9x - 
x sin 9x - 
cos 9x + C
C. 
x3 sin 9x + 
x2 cos 9x - 
x sin 9x - 
cos 9x + C
D. 
x3 sin 9x - 
x2 cos 9x + 
x sin 9x + 
cos 9x + C
Mathematics