Solve the system of equations by the elimination method. Check your solutions. For any dependent equations, write your answer in the ordered pair form.
A. {(-1, 0)}
B. 
C. {(5, -4)}
D. ?
Answer: D
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Evaluate the integral in terms of an inverse hyperbolic function.
A. - 
csch-1(
) - 
csch-1
B. - 
sech-1(
) + 
sech-1
C. cosh-1(
) - cosh-1
D. sinh-1(
) - sinh-1
Solve the problem. Round your answer to 2 decimal places when necessary.The population of a certain country is about 105 million. The overall birth rate is 19.9 births per 1000. Approximately how many births were there in the country?
A. 20,900 births B. 20.9 million births C. 2.09 million births D. 209,000 births
Answer the question about percent. Round your answer to the nearest tenth of a percent, if necessary.What percent of 50 is 516?
A. 103.2% B. 1032.0% C. 0.1% D. 1.0%
Evaluate the exponential expression. Write the answer as an improper fraction where appropriate.
2
A. - 
B. 
C. - 
D. 