For how many minutes of calls will the costs of the two plans be equal?

1. there are 25 students who started computer programming in elementary school and 25 students who started computer programming in middle school. the first group had a mean final project grade of 95% and the second group had a mean final project grade of 92%. the line plot shows the differences after 10 rerandomizations. determine whether the difference in the means of the two groups is significant based on the line plot. explain your answer.

Select all the correct answers. what is 221,000,000,000,000,000,000 expressed in scientific notation?

The verbal translation for the difference of m and 7 increased by 15