Write the expression for the general (or nth) term, an, of the geometric sequence.6, -12, 24, -48, 96,. . .
A. an = a1 - 2n
B. an = 6(-2)n
C. an = 6(-2)n-1
D. an = 6(-2)n
Answer: C
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Provide an appropriate response.Simplify: (2 - 3i) + (6 + i)
Fill in the blank(s) with the appropriate word(s).
Solve the problem.The decibel level D of a sound is related to its intensity I by 
. If I0 is 10-12, then what is the intensity of a noise measured at 93 decibels? Express your answer in scientific notation, rounding to three significant digits, if necessary.
A. 1.09 × 1016 watt/m2 B. 2 × 10-3 watt/m2 C. 2 × 10-2 watt/m2 D. 9.3 × 10-10 watt/m2
Round to the indicated place value.Round to the nearest thousandth: -310.79892
A. -310.7989 B. -310.798 C. -310.799 D. -310.800
Find the median of the set of numbers.Number of video tapes borrowed each day: 93, 142, 248, 240, 396, 442
A. 244 video tapes B. 240 video tapes C. 248 video tapes D. 223.5 video tapes