Determine whether the graph is the graph of a function. 
A. function
B. not a function
Answer: B
Mathematics
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Solve.(y - 3) - (y + 5) = 7y
A. - 
B. - 
C. - 
D. - 8
Mathematics
Perform the operation indicated.
? 
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.Use the formula L = 10 ? log 
, where the loudness of a sound in decibels is determined by I, the number of watts per square meter produced by the sound wave, and 
A certain noise produces 9.92 × 10-5 watts per square meter of power. What is the decibel level of this noise?
A. 70 db B. 184 db C. 8 db D. 80 db
Mathematics
Simplify the fraction. (Write the fraction in lowest terms.) If the fraction cannot be simplified, so state.
A. 
B. 
C. 
D. 
Mathematics