Perform the indicated operation. Assume that all variables are nonnegative.
? 
A. 42
B. 
C. 
D. 
Answer: C
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Perform the indicated operation(s). Where possible, reduce the answer to lowest terms.
- 
A. - 
B. 
C. 0
D. 
Solve the problem.The value, in dollars, of a particular KX37B computer is given by 
where x is the number of years the computer has been in existence. Find the slope and y-intercept of the equation and explain what each signifies.
A. -558.25 signifies the hourly cost of repairs, and 4413 signifies the cost of software. B. -558.25 signifies the amount of depreciation per year, and 4413 signifies the initial cost. C. -558.25 signifies the number of computers owned, and 4413 signifies the cost of electricity. D. 4413 signifies the amount of depreciation per year, and -558.25 signifies the initial cost.
Find the quotient and write in rectangular form. First convert the numerator and denominator to trigonometric form.
A. 
+ 
i
B. 
+ 
i
C. 8 + 8
i
D. 1 + 
i
Solve the problem.One of Sal's customers ordered items costing $6.38, $13.60, $15.29, and $22.21. If Sal's commission on each item is 30%, what is his total commission on this sale? Round to the nearest cent.
A. $10.58 B. $15.33 C. $12.66 D. $17.24