What's the square root of 68?

For which rational expression is -2 an excluded value of x?

Amanda went into the grocery business starting with five stores. after one year, she opened two more stores. after two years, she opened two more stores than the previous year. if amanda expands her grocery business following the same pattern, which of the following graphs represents the number of stores she will own over time?

Paul’s car is 18 feet long. he is making a model of his car that is 1/6 the actual size. what is the length of the model?