Simplify.
? 
A. 2
B. 
C. 
D. 6
Answer: D
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Find the sum of the first 8 terms of the geometric sequence 2, -8, 32, ...
Fill in the blank(s) with the appropriate word(s).
State the degree of the polynomial equation.x4 - 18x2 + 32 = 0
A. 2 B. 4 C. 6 D. 1
Sketch a graph of f.f(x) = -4x2 + 6x
A. 
B. 
C. 
D. 
The cost of controlling emissions at a firm goes up rapidly as the amount of emissions reduced goes up. Here is a possible model:
?
?
where q is the reduction in emissions (in pounds of pollutant per day) and C is the daily cost (in dollars) of this reduction. Government clean-air subsidies to the firm are based on the formula
?
?
where q is again the reduction in emissions (in pounds per day) and S is the subsidy (in dollars). Calculate the net cost function
?
??
given the cost and subsidy above, and find the value of q that gives the lowest net cost. What is this lowest net cost?
?
A. 
B. 
C. 
D. 
E. 