In 1999 the stock market took big swings up and down. A surv…

In 1999 the stock market took big swings up and down. A survey of 983 adult investors asked how often they tracked their portfolio. The table shows the investor responses. What is the probability that an adult investor tracks his or her portfolio daily? Express your answer as a decimal rounded to three decimal places.  

Solve the problem.The pH of a solution ranges from 0 to 14….

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