Simplify.
A. x16
B. x4
C. x16
D. x4
Answer: D
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Find the root. Assume that all variables represent positive numbers.
A. 100x2 B. 10x2 C. 31x2 D. Not a real number
Simplify.-5x ? 9x
A. -45x B. -45x2 C. 4x D. 4x2
Graph the function. Describe its position relative to the graph of the indicated basic function.f(x) = log4(x + 3); relative to f(x) = log4x
A. Moved right 3 units
B. Moved right 3 units
C. Moved left 3 units
D. Moved left 3 units
Find a) the mean, 
, of the data, b) the deviation from the mean for each data item, and c) the sum of the deviations.3, 12, 6, 9, 7
A. a) mean: 7.4, b) deviations: 4.4, -4.6, 1.4, -1.6, 0.4, c) sum: 37 B. a) mean: 6.8, b) deviations: -4.4, 5.6, -1.4, -1.6, 0.4, c) sum: 37 C. a) mean: 7.4, b) deviations: -4.4, 4.6, -1.4, 1.6, -0.4, c) sum: 0 D. a) mean: 6.8, b) deviations: 4.4, -5.6, 1.4, 1.6, -0.4, c) sum: 0