Find the graph that matches the given system of equations.3x + y = 15y = 3x - 9
A. 
B. 
C. 
D. 
Answer: B
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Change the numbers to their percent equivalents. Round to the nearest tenth of a percent.
A. 40% B. 55% C. 1,375% D. 550%
Provide an appropriate response.Rearrange the formula to solve for the indicated letter: c = 2m - s, for m
Fill in the blank(s) with the appropriate word(s).
Write the decimal as a fraction or mixed number in lowest terms.23.589
A. 
B. 
C. 23
D. 23
The pH of an acidic solution is a measure of the concentration of the acid particles in the solution, with smaller values of the pH indicating higher acid concentration. In a laboratory experiment, the pH of a certain acid solution is changed by dissolving over-the-counter antacid tablets into the solution. In this experiment, the pH changes according to the equation
,
where x is the number of grams of antacid added to the solution. What is the pH of the solution after the addition of 0.05 grams of antacid tablet?
A. 5.99
B. 4.02
C. -0.85
D. 4.29
E. 5.14