Estimate the sum or difference by rounding each number to the nearest hundred.
A. 6200
B. 6000
C. 6300
D. 6228
Answer: C
Mathematics
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Solve the inequality.
< 0
A. (-3, ?) B. (-5, ?) C. No solution D. (-?, ?)
Mathematics
Use a sketch to find the exact value of the expression.cos 
A. 
B. - 
C. - 
D. 
Mathematics
Use the given information to answer the question.The number N, in millions of Americans of age x with arthritis, is estimated with the following graph. 
Approximately how many 40-year-olds and 55-year-olds combined have arthritis?
A. 31,400,000 B. 400,000 C. 4,100,000 D. 3,600,000
Mathematics
Solve by any method. Assume a and b represent nonzero constants. ax + by = 22ax + 4by = 1
A. 
B. 
C. 
D. 
Mathematics