Evaluate.5xy
for x = 1, y = 3
A. 18
B. 12
C. 9
D. 15
Answer: D
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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 H+ represents the concentration of the hydrogen ions in the solution in moles per liter. Find the pH if the hydrogen ion concentration is 
A. 5.92 B. 6.92 C. 6.08 D. 5.08
Graph the inequality.x + 4y < 6
A. 
B. 
C. 
D. 
Graph the equation.x = 3y2 - 7y + 4
A. 
B. 
C. 
D. 
Solve the problem.A satellite following the hyperbolic path shown in the picture turns rapidly at (0, 6) and then moves closer and closer to the line y = 
x as it gets farther from the tracking station at the origin. Find the equation that describes the path of the satellite if the center of the hyperbola is at (0, 0).
A. 
- 
= 1
B. 
- 
= 1
C. 
- 
= 1
D. 
- 
= 1