Solve the problem.Use the line graph to determine how many more hours were needed to prepare for Test 2 than for Test 3.
A. 2 hours
B. 1 hours
C. 4 hours
D. 3 hours
Answer: A
Mathematics
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Change the order of integration and evaluate the integral.
A. 
?2
B. 
?2
C. 
?2
D. 
?2
Mathematics
Find the surface area or volume.Use substitution and a table of integrals to find, to two decimal places, the area of the surface generated by revolving the curve 
about the x-axis.
A. 232.51 B. 215.17 C. 177.12 D. 192.06
Mathematics
Answer the question or solve the problem.True or False? If x < 4 then -2x < -8.
A. True B. False
Mathematics
Add and, if possible, simplify.
+ 
A. 
B. 
C. 
D. 
Mathematics