Evaluate the expression without a calculator.ln e-4
A. - 
B. e ln -4
C. 1
D. -4
Answer: D
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Rewrite the expression in terms of exponentials and simplify the results.4 cosh (ln x) + 14 sinh (ln x)
A. 9x
B. 9
C. 9x - 
D. 0
Graph the function by hand. Then use a graphing calculator to verify your graph. Find the domain and range of the function.f(x) = 8
x
A. domain: all real numbers;
range: y > 0
B. domain: all real numbers;
range: y < 0
C. domain: all real numbers;
range: y < 0
D. domain: all real numbers;
range: y > 0
Find the square root.
A. 0.06 B. 0.006 C. 6 D. 0.6
Solve the problem.Among first-year students enrolled in a two-year program at a trade school, the following was determined to be true: 74% would successfully complete the year and go on to the second year; 19% would repeat the year; and 7% would drop out of the program. Among the second-year students, 78% would successfully complete the year and graduate; 7% would repeat the year; and 15% would drop out of the program. What is the expected number of years that the average first-year student will spend in the program? Round your answer to the nearest hundredth.
A. 2.22 years B. 2.42 years C. 2.35 years D. 2.28 years