Solve the equation for exact solutions.6 cos-1 x = ?
A. 
B. 
C. 
D. 
Answer: D
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Write the rational expression in lowest terms.
A. -1 B. s - y C. s + y D. Already in lowest terms
Solve the equation. Give an approximate solution to four decimal places.e2x = 4
A. {0.1733} B. {0.6931} C. {5.4366} D. {2.7726}
Solve the problem.A cup of coffee is heated to 194°and is then allowed to cool in a room whose air temperature is 
After 11 minutes, the temperature of the cup of coffee is 
Find the time needed for the coffee to cool to a temperature of 102°. Assume the cooling follows Newton's Law of Cooling: U = T + (Uo - T)ekt.(Round your answer to one decimal place.)
A. 15.1 minutes B. 29.7 minutes C. 26.4 minutes D. 41.1 minutes
Find the vertical asymptotes of the rational function. f(x) = 
A. x = 0, x = 4 B. x = -4, x = 4 C. x = 0, x = -4 D. x = 0, x = -4, x = 4