Solve the problem.Find the center of mass of a tetrahedron of constant density bounded by the coordinate planes and the plane 
.
A. 
= 
, 
= 
, 
= 1
B. 
= 
, 
= 
, 
= 
C. 
= 
, 
= 2, 
= 
D. 
= 
, 
= 1, 
= 
Answer: B
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Graph the function. Determine the symmetry, if any, of the function.y = - 
A. Symmetric about the y-axis
B. Symmetric about the y-axis
C. No symmetry
D. Symmetric about the y-axis
Provide an appropriate response.Factor completely: 3x2 + 7x + 2
Fill in the blank(s) with the appropriate word(s).
Find the value of the variable that satisfies the equation.-40 + 3x = -2x
A. x = -7 B. x = 7 C. x = -8 D. x = 8
Solve the problem.List all the combinations of 4 objects 1, 2, 3, and 4 taken 3 at a time. What is C(4, 3)?
A. 123, 124, 134, 234, 321, 432 C(4, 3) = 6 B. 111, 112, 113, 114, 121, 122, 123, 124, 131, 132, 133, 134, 141, 142, 143, 144, 211, 212, 213, 214, 221, 222, 223, 224, 231, 232, 233, 234, 241, 242, 243, 244, 311, 312, 313, 314, 321, 322, 323, 324, 331, 332, 333, 334, 341, 342, 343, 344, 411, 412, 413, 414, 421, 422, 423, 424, 431, 432, 433, 434, 441, 442, 443, 444 C(4, 3) = 64 C. 123, 124, 132, 134, 142, 143, 213, 214, 231, 234, 241, 243, 312, 314, 321, 324, 341, 342, 412, 413, 421, 423, 431, 432 C(4, 3) = 24 D. 123, 124, 134, 234 C(4, 3) = 4