Combine. Assume that all variables represent non-negative real numbers.5
+ 
A. 15
B. 8
C. 6
D. 5
+ 
Answer: B
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Use natural logarithms to solve the exponential equation. If necessary, round to the nearest thousandth.43x = 7x + 1
A. 0.879 B. 2.404 C. 1.404 D. -3.477
Solve the problem.Locate and identify the absolute extreme values of sin (ln x) on 
A. Absolute maximum at(5, sin (ln 4)); absolute minimum at (e?/2, -1)
B. Absolute maximum at (e?/2, 1); absolute minimum at 
C. Absolute maximum at (e?/2, 1); absolute minimum at (4, sin (ln 4))
D. Absolute maximum at (5, sin (ln 4)); absolute minimum at (4, sin (ln 4))
A card is drawn from a standard deck of cards. Expressing your answer as a fraction in simplest form, what is the probability of getting the specified card?the 2 of spades
A. 
B. 
C. 
D. 
The reliability of a new model of CD player can be described by the exponential function 
where the reliability R is the probability (as a decimal) that the CD player is still working t years after it is manufactured. Round the answer to the nearest hundredth. Then write your answer as a percent.What is the probability that the CD player will still work 
of a year after it is manufactured?
A. 85% B. 52% C. 18% D. 72%