Within a large metropolitan area, 15% of the commuters currently use the public transportation system, whereas the remaining 85% commute via automobile. The city has recently revitalized and expanded its public transportation system. It is expected that 6 months from now 10% of those who are now commuting to work via automobile will switch to public transportation, and 90% will continue to commute via automobile. At the same time, it is expected that 40% of those now using public transportation will commute via automobile, and 60% will continue to use public transportation. In the long run, what percent of the commuters will be using public transportation?
__________ %
20
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Solve.The height in meters of females in a certain ethnic group is approximated by h = 0.52 + 2 log (t/3) where t is the girl's age in years and 1 ? t ? 20. Estimate a girl's height at 4 years of age in this particular ethnic group. Round to the nearest hundredth.
A. 0.77 m B. 1.12 m C. 0.96 m D. 0.52 m
Find the partial fraction decomposition for the rational expression.
A. - 
+ 
B. 
+ 
C. 
- 
D. 
+ 
Graph the function.y = cot (?x)
A. 
B. 
C. 
D. 
A tank initially contains 75 lbs of salt dissolved in 400 gal of water. Saltwater containing 2 lbs of salt per gal enters the tank at the rate of 8 gal per min. The mixture (kept uniform by stirring) is removed at the same rate. How many pounds of salt are in the tank after 1/2 hour?
What will be an ideal response?