Solve the problem.P(x) = -x3 + 24x2 - 144x + 50, x ? 2 is an approximation to the total profit (in thousands of dollars) from the sale of x hundred thousand tires. Find the number of hundred thousands of tires that must be sold to maximize profit.
A. 10 hundred thousand
B. 2 hundred thousand
C. 4 hundred thousand
D. 12 hundred thousand
Answer: D
Mathematics
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Find the product.(x - 23i)(x + 23i)
A. x2 + 529 B. x2 - 529 C. x2 - 46x - 529 D. x2 + 46x + 529
Mathematics
An electric company charges $7.50 per month plus 7.5 cents for each kilowatt hour (kwh) of electricity used. Find a rational function that gives the average cost per kwh when using n kwh. ?
A. 
B. 
C. 
D. 
E. 
Mathematics
Divide and express the result in standard form.
A. 1 B. -1 C. -i D. i
Mathematics
Write the partial fraction decomposition of the rational expression.
A. 
+ 
- 
B. - 
- 
- 
C. - 
+ 
+ 
D. 
+ 
+ 
Mathematics