Find the sum.
A. 
B. 
C. 
D. Does not exist
Answer: B
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Find a quadratic function expressed in vertex form that models the data in the given table.
A. y = 2(x + 2009)2 + 5 B. y = 3(x - 2009)2 + 5 C. y = 3(x + 2009)2 + 5 D. y = 2(x - 2009)2 + 5
Divide. Express the quotient in lowest terms.
÷ 
A. 
B. 
C. - 
D. 
Solve the problem.Suppose that of the sons of right-handed fathers, 90% are right-handed and 10% are left-handed. Of the sons of left-handed fathers, 30% are right-handed and 70% are left-handed. (Assume that right-handed and left-handed fathers have sons in equal numbers.) Suppose that in the initial generation all of the fathers are right-handed. Determine the percentage of their grandsons that are left-handed.
A. 84% B. 1% C. 10% D. 16%
Solve the problem.An appliance manufacturer has determined that the cost, in dollars, of producing x espresso makers is given by 
x0.5. If the revenue from the sale of x espresso makers is given by 
find the rate at which the average profit per espresso maker is changing when 40 espresso makers have been made and sold. Round to the nearest cent.
A. -$2.52/espresso maker B. $2.52/espresso maker C. $2.24/espresso maker D. -$2.24/espresso maker