Factor the special products.z2 - 9
A. (z + 3)(z - 3)
B. (z - 3)2
C. (z + 3)2
D. prime
Answer: A
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Graph the polar equation.r = 
A. 
B. 
C. 
D. 
Find the mean.Frank's Furniture employees earned the following amounts last week: $246.87 $258.97 $171.77 $471.95 $394.87 $359.81 $376.58 $472.87 $509.01What was the mean amount earned by an employee last week? Round your answer to the nearest cent.
A. $466.10 B. $355.86 C. $362.52 D. $407.84
Perform the indicated operations and simplify. Assume that all variables represent positive real numbers.6 ÷ 
A. 
B. 
C. 
D. 6
Use Descartes' Rule of Signs to determine the possible number of positive real zeros and the possible number of negative real zeros for the function.F(x) = 8x5 - 5x4 + 4x3 - 9
A. 0, 2, or 4 positive; 0 negative B. 1 positive; 1 or 3 negative C. 1 or 3 positive; 1 or 3 negative D. 1 or 3 positive; 0 negative