Use the commutative and associative properties to simplify the expression.
(-12y)
A. 8y
B. -20y
C. 20y
D. 15y
Answer: B
Mathematics
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Find all local extreme values of the given function and identify each as a local maximum, local minimum, or saddle point.
A. f(0, 0) = 2, saddle point; f(6, 6) = 2,594, local maximum B. f(6, 0) = 2, local minimum; f(0, 6) = 2, local minimum C. f(0, 0) = 2, test is inconclusive D. f(6, 6) = 2,594, local maximum
Mathematics
Solve the equation 
for x.
?
A. There is no solution.
B. 
C. ?
D. ?
Mathematics
Simplify. Assume all variables represent positive real numbers.
A. 
B. 
C. 
D. 2
Mathematics
Sketch the graph of the quadratic function. Identify the vertex and axis of symmetry.y = 
x2 
A. vertex: (0, 
)
axis of symmetry: x = 0
B. vertex: (0, 0)
axis of symmetry: x = 0
C. vertex: (0, 0)
axis of symmetry: x = 0
D. vertex: (0, 
)
axis of symmetry: x = 0
Mathematics