Determine whether the relation defines y as a function of x. Give the domain.y = 
A. Function; domain: (-?, -18) ? (-18, ?)
B. Function; domain: (-18, 18)
C. Not a function; domain: (-?, -18) ? (-18, 0)
D. Not a function; domain: (-?, ?)
Answer: A
Mathematics
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Find y ".y = 
A. 
B. - 
C. - 
D. - 
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Solve the formula for the indicated letter. Assume that all variables represent nonnegative numbers.x = 
for r
A. r = 
B. r = x + y
C. r = 
D. r = 
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Solve the absolute value inequality. Write your answer in interval notation.|7k + 6| ? 9
A. 
B. 
? 
C. 
D. 
Mathematics
Subtract.
- 
A. - 2
B. - 2
C. 1
D. - 4
Mathematics