Add or subtract as indicated.(17s + 15t) + (2t - 11s)
A. 23st
B. 6s + 17t
C. 28s + 17t
D. 19s + 4
Answer: B
Mathematics
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Use natural logarithms to solve the exponential equation symbolically.5x = 625
A. x = ln 125
B. x = ln 
C. x = ln 20
D. x = 
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Solve the problem.The formula D = 8e-0.04h can be used to find the number of milligrams D of a certain drug in a patient's bloodstream h hours after the drug has been given. When the number of milligrams reaches 3, the drug is to be given again. What is the time between injections?
A. 24.52 hrs B. 27.47 hrs C. 25.97 hrs D. 51.99 hrs
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Multiply. Do not simplify.
? 
A. 
B. 
C. 
D. 
Mathematics
The graph of a logarithmic function is shown. Select the function which matches the graph.
A. y = log x - 1 B. y = log(1 - x) C. y = log(x - 1) D. y = 1 - log x
Mathematics