I need to know the slope, y-intercept and the equation

Determine the next term in the sequence. then write the next 2 terms 4,16,28, what number do you do to get that?

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.

When turned about its axis of rotation, which shape could have created this three-dimensional object?