Find the amplitude or vertical shift as requested.Find the amplitude of f(x) = 5 cos (3x) + 
A. 3
B. 15
C. 
D. 5
Answer: D
Mathematics
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Answer the question about percent. Round your answer to the nearest tenth of a percent, if necessary.909 is what percent of 781?
A. 116.4% B. 1.2% C. 85.9% D. 0.1%
Mathematics
Write a signed number for the statement.$158 profit
A. -$158 B. $158
Mathematics
Solve the problem.The pH of a solution ranges from 0 to 14. An acid has a pH less than 7. Pure water is neutral and has a pH of 7. The pH of a solution is given by 
where x represents the concentration of the hydrogen ions in the solution in moles per liter. Find the hydrogen ion concentration if the 
A. 102 B. 10-2 C. 0.5 D. 0.69
Mathematics
Solve the equation.-(6y - 9) - (-5y - 6) = 8
A. {-7} B. {7} C. {-23} D. {-11}
Mathematics