Determine the indefinite integral.
(Simplify the answer using the definitions of hyperbolic functions.)
A. 
+ C
B. x + 
+ C
C. cosh x + C
D. 
+ C
Answer: D
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The scores on a 30-point multiple-choice exam are given in the following frequency table:
What is the mean score on the exam?
A. 26.5 B. 25 C. 26 D. 25.5
Solve the problem.Anne and Nancy use a metal alloy that is 14% copper to make jewelry. How many ounces of an alloy that is 11% copper must be mixed with an alloy that is 16% copper to form 125 ounces of the desired alloy?
A. 50 ounces B. 75 ounces C. 80 ounces D. 52 ounces
Give an appropriate answer.An automobile tire is supposed to be pressurized to 35.0 pounds per square inch. The current pressure is 30.6 pounds per square inch. Is the tire overinflated or underinflated?
A. The pressure is exactly equal to the recommended pressure. B. Overinflated C. Underinflated
Solve the equation.
= -20
A. -1 B. 400 C. 1 D. -400