Solve the problem.A survey of hourly wages stated that the hourly wages for an entry level worker for clerk's position were $4, $4, $7. Find the average hourly wage.
A. $16
B. $6
C. $5
D. $15
Answer: C
Mathematics
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Evaluate the expression for the given value or values.- 
for x = -477, y = 0
A. 477 B. -477 C. 0 D. undefined
Mathematics
Sketch the surface z = f(x,y).f(x, y) = 4x2 + 4y2 + 2
A. 
B. 
C. 
D. 
Mathematics
Factor. Assume that all exponents are positive.64x2m - 4y2n
A. 256(xm + yn)(xm - yn) B. 16(xm + yn)(m - n) C. (8xm + 2yn)(8xm - 2yn) D. (8xm - 2yn)2
Mathematics
Determine which value(s), if any, must be excluded from the domain of the variable in the expression.
A. x = -7 B. x = 7 C. none D. x = 0
Mathematics