Evaluate the expression when x = 2, y = 1, and z = 4.

A. 20
B. 28
C. 16
D. -20


Answer: A

Mathematics

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Find the sum or difference, and write in lowest terms, if necessary.-  - 

A.  
B. -  
C. -  
D.

Mathematics

If possible, find the slope of the line passing through the two points.

A.
B.
C.
D.

Mathematics

Multiply the polynomials using the special product formulas. Express the answer as a single polynomial in standard form.(3x + y)(3x - y)

A. 9x2 + 6xy - y2 B. 9x2 - y2 C. 6x2 - y2 D. 9x2 - 6xy - y2

Mathematics

Evaluate the definite integral.

A.  - 2
B.  - 1
C. 2 - 4
D. - 2 + 4

Mathematics