Solve the problem.Chuck and Dana agree to meet in Chicago for the weekend. Chuck travels 236 miles in the same time that Dana travels 224 miles. If Chuck's rate of travel is 3 mph more than Dana's, then at what rate does Chuck travel?
A. 51 mph
B. 67 mph
C. 56 mph
D. 59 mph
Answer: D
Mathematics
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Use a calculator to approximate the number. (Round your answer to three decimal places.)
?
?
?
A. -10.075 B. 10.075 C. -4.123 D. 4.123 E. 2.160
Mathematics
The concentration D of a drug, in milligrams per deciliter, in the blood t hours after an injection is given by 
. What is the eventual concentration of the drug in the blood?
A. About 4.07 milligrams per deciliter B. About 8.68 milligrams per deciliter C. About 4.61 milligrams per deciliter D. 0 milligrams per deciliter
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Find the sum.-82 + (+49)
A. 33 B. -131 C. -33 D. 131
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Find the derivative of y with respect to x.y = sec-1 
A. 
B. 
C. 
D. 
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