Solve the problem.A certain company has found that its expenditure rate per day (in hundreds of dollars) on a certain type of job is given by 
where x is the number of days since the start of the job. Find the expenditure if the job takes 8 days.
A. $448
B. $10,400
C. $104
D. $44,800
Answer: D
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Graph the system of inequalities.x ? 0y ? 0x2 + y2 ? 9y + x ? -5
A. 
B. 
C. 
D. 
Use a Venn diagram to answer the question.A survey of 240 families showed that91 had a dog;70 had a cat;31 had a dog and a cat;91 had neither a cat nor a dog, and in addition did not have a parakeet;7 had a cat, a dog, and a parakeet.How many had a parakeet only?
A. 34 B. 19 C. 24 D. 29
Solve the logarithmic equation. Be sure to reject any value that is not in the domain of the original logarithmic expressions. Give the exact answer.log (3 + x) - log (x - 4) = log 2
A. {-11}
B. 
C. ?
D. {11}
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. 
$0 - $4,999
A. 0.03 B. 0.01 C. 0.02 D. 0.05