Rationalize the denominator.
A. 
+ 
B. 
- 
C. 
D. 
- 
Answer: B
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Answer the question.If f(x) = 3x + 4 and g(x) = 7x2 - 3x + 3, find (f ? g)(3).
A. 729 B. 175 C. 399 D. 741
Solve the problem.The stiffness of a rectangular beam is proportional to its width times the cube of its depth. Find the dimensions of the stiffest beam than can be cut from a 
cylindrical log. (Round answers to the nearest tenth.)
A. w = 5.5 in.; d = 9.5 in. B. w = 6.5 in.; d = 10.5 in. C. w = 6.5 in.; d = 8.5 in. D. w = 4.5 in.; d = 10.5 in.
Solve the system by the substitution method.
+ y2 = 9
A. {(0, 3), (
, 2)}
B. {(0, 3), (- 
, 2)}
C. {(- 
, 2), (0, -3), (
, 2)}
D. {(0, -3), (
, 2)}
Solve for the amount of discount and amount due.Invoice amt: $4,091Invoice date: July 7Terms: 3/10, n/30Date paid: July 27
A. Amount of discount: $409.10; amount due: $3,681.90 B. Amount of discount: $40.91; amount due: $4,050.09 C. Amount of discount: $0; amount due: $4,091 D. Amount of discount: $122.73; amount due: $3,968.27