Solve.Bob owns a watch repair shop. He has found that the cost of operating his shop is given by 
where c is the cost in dollars, and x is the number of watches repaired. How many watches must he repair to have the lowest cost?
A. 68 watches
B. 32 watches
C. 30 watches
D. 34 watches
Answer: B
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Evaluate the expression.61
A. 
B. 6
C. 1
D. -6
If the sum of the vertex angles of a polygon is 540, then it is called a(n) .
What will be an ideal response?
The number of visitors, in millions of visitors per year, to Hawaii in the years 1985 to 1993 can be approximated by
?
?
where 
represents June 30,1985. During the same period, visitor spending can be approximated by
?
?
where 
represents June 30,1985. Assuming the trends in the models above continue indefinitely, numerically estimate 
.
?
Please round the answers to the nearest hundredth.
?
A. 
B. 
C. 
D. 
E. does not exist
Solve the problem.An artifact is discovered at a certain site. If it has 52% of the carbon-14 it originally contained, what is the approximate age of the artifact to the nearest year? (carbon-14 decays at the rate of 0.0125% annually.)
A. 2272 yr B. 3840 yr C. 5231 yr D. 4160 yr