Write the phrase as a variable expression. Use x to represent "a number."The quotient of 55 and a number
A. x - 55
B. 
C. 
D. 55 - x
Answer: B
Mathematics
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Decide whether the relation defines a function.
A. Function B. Not a function
Mathematics
Solve the equation.
+ 6 = 5
A. {-1} B. {121} C. ? D. {1}
Mathematics
Perform the operation indicated. Simplify.
+ 
A. 
B. 
C. 
D. 
Mathematics
The probability density function for the life span of an electronics part is 
where t is the number of months in service. Find the probability that any given part of this type lasts longer than 18 months. Round your answer to three decimal places.
?
A. 0.487 B. 0.513 C. 0.532 D. 0.497 E. 0.468
Mathematics