Perform the indicated operation and, if possible, simplify.
? 
A. 
B. 
C. 
D. 
Answer: D
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Solve the equation.ln (6) - ln x = ln (x - 5)
A. x = -1
B. x = 6, x = -1
C. x = 6
D. x = 
Identify the number as prime, composite, or neither.126
A. Composite B. Neither C. Prime
Solve the problem.The rate at which an assembly line worker's efficiency E (expressed as a percent) changes with respect to time t is given by 
where t is the number of hours since the worker's shift began. Assuming that 
find E(t).
A. E(t) = 55t - 4t2 + 147 B. E(t) = 55t - 8t2 + 45 C. E(t) = 55t - 4t2 + 96 D. E(t) = 55t - 4t2 + 45
The table shows, for some particular year, a listing of several income levels and, for each level, the proportion of the population in the level and the probability that a person in that level bought a new car during the year. Given that one of the people who bought a new car during that year is randomly selected, find the probability that that person was in the indicated income category. Round your answer to the nearest hundredth. 
$10,000 - $14,999
A. .06 B. .05 C. .03 D. .02