Solve the problem.A merchant has coffee worth $2 a pound that she wishes to mix with 4 pounds of coffee worth $9 a pound to get a mixture that can be sold for $3 a pound. How many pounds of the $2 coffee should be used?
A. 28 lb
B. 24 lb
C. 12 lb
D. 14 lb
Answer: B
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Solve the equation on the interval 0 ? ? < 2?.2 cos ? + 3 = 2
A. 
B. 
C. 
D. 
Perform the indicated operation.23 lb 14 oz - 8 lb 12 oz
A. 31 lb 10 oz B. 32 lb 10 oz C. 14 lb 2 oz D. 15 lb 2 oz
Given the polynomial function f(x), find the rational zeros, then the other zeros (that is, solve the equation 
), and factor f(x) into linear factors.f(x) = x3 - 8x2 + 17x - 30
A. 6, 1 + 
, 1 - 
; f(x) = (x - 6)(x - 1 - 
)(x - 1 +
)
B. 6, -1 + 2i, -1 - 2i; f(x) = (x - 6)(x + 1 - 2i)(x + 1 + 2i)
C. -6, 1 + 2i, 1 - 2i; f(x) = (x + 6)(x - 1 - 2i)(x - 1 + 2i)
D. 6, 1 + 2i, 1 - 2i; f(x) = (x - 6)(x - 1 - 2i)(x - 1 + 2i)
Fill in the blank with one of the words or phrases listed below. 
Two angles that have a sum of 180° are called 
angles.
A. straight B. obtuse C. supplementary D. complementary