Solve the problem.The current I in a circuit with voltage E, resistance R, capacitive reactance Xc and inductive reactance XL is I = 
Find I if E = 3
(cos 45° + i sin 45°), R = 4, XL = 4, and XC = 2.Give your answer in rectangular form.
A. 
+ 
i
B. 
+ 
i
C. 
+ 
i
D. 
+ 
i
Answer: C
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Solve the equation.
+ 9 = 5
A. 
B. {-71}
C. 
D. 
Solve the problem.The following polynomial approximates the rabbit population in a particular area, 
where x is the number of years from 1995. Use a graphing calculator to describe the rabbit population from the years 1995 to 2010.
A. The population remains stable. B. The population increases. C. The population decreases.
Factor the expression completely, if possible.121 - y2
A. (11 + y)2 B. (11 + y)(11 - y) C. (11 - y)2 D. Does not factor
Solve the problem.The price p and x, the quantity of a certain product sold, obey the demand equation p = - 
x + 100, {x|0 ? x ? 1000}a) Express the revenue R as a function of x.b) What is the revenue if 450 units are sold?c) Graph the revenue function using a graphing utility.d) What quantity x maximizes revenue? What is the maximum revenue?e) What price should the company charge to maximize revenue?
What will be an ideal response?