Solve the problem.Suppose that f(x) = 3x. What is f(4)? What point is on the graph of f?
A. 64; (4, 64)
B. 64; (3, 64)
C. 81; (4, 3)
D. 81; (4, 81)
Answer: D
Mathematics
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Expand the number to its natural form.1.0 × 104
A. 1,000,000 B. 100,000 C. 1000 D. 10,000
Mathematics
Factor.81k2 - 16m2
A. (9k + 4m)(9k - 4m) B. (9k + 4m)2 C. 81k2 - 16m2 D. (9k - 4m)2
Mathematics
Solve the problem.38% of those who purchase music CDs online are 18-23 years old.This is three and one-half times the number who are 38-43 years old. What percent of online music purchasers are 38-43 years old?
A. 114% B. 10.9% C. 38% D. 133%
Mathematics
Perform the operations indicated. Simplify the answer whenever possible.
+ 
+ 
A. 1
B. 
C. 1
D. 
Mathematics