Find the intervals on which the function is continuous.y = 
A. continuous everywhere
B. discontinuous only when ? = ?
C. discontinuous only when ? = 
D. discontinuous only when ? = 0
Answer: D
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Determine the nature of the solutions of the equation.5 + 8z2 = 4z
A. Two real B. Two nonreal C. One real
Write in radical form. Assume all variables represent positive real numbers.m8/3
A. 
3
B. 
C. 
D. 
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
Express the number in scientific notation.0.000000023207
A. 2.3207 × 10-9 B. 2.3207 × 10-8 C. 2.3207 × 108 D. 2.3207 × 10-7