Evaluate the expression for the given values of the variables, if possible.-xy
x = -4, y = -8
A. -320
B. -40
C. -32
D. -132
Answer: C
Mathematics
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Give an appropriate answer.Given the function f(x, y, z) and the positive number ? as in the formal definition of a limit, find a positive number ? as in the definition that insures 
< ?.f(x, y, z) = 
; ? = 0.01
What will be an ideal response?
Mathematics
Provide an appropriate response.Perform the division: 
A. 
+ 
B. 
+ 
C. 3 + 
x
D. -4 + 2x
Mathematics
Write the statement as an inequality.x is less than 6
A. x ? 6 B. x > 6 C. x ? 6 D. x < 6
Mathematics
Solve the equation.a - 7 = -13
A. a = -6 B. a = -20 C. a = 20 D. a = 6
Mathematics