Simplify the exponential expression.83 ? 88
A. 811
B. 6424
C. 6411
D. 824
Answer: A
Mathematics
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Reverse the order of integration and then evaluate the integral.
A. ln 7 - 1
B. 
C. 
D. ln 7
Mathematics
Find the value of x.
?
?
?
A. 
B. 
C. 
D. ?
E. ?
Mathematics
Graph the function.f(x) = 
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.The temperature of water in a certain lake on a day in October can be determined by using the model 
where x is the number of feet down from the surface of the lake and y is the Celsius temperature of the water at that depth. Based on this model, at what depth is the water 9 degrees? (Round to the nearest foot.)
A. 67 ft B. 12 ft C. 45 ft D. 30 ft
Mathematics