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

Solve.The function A = A0e-0.01155x models the amount in pou…

Solve.The function A = A0e-0.01155x models the amount in pounds of a particular radioactive material stored in a concrete vault, where x is the number of years since the material was put into the vault. If 700 pounds of the material are initially put into the vault, how many pounds will be left after 170 years?