Sami's square yard needs to be fenced to keep her dog, Sophie, home. Her yard is 400 square feet. How much fencing does she need to go all the way aroundher yard?

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.

The following graph shows the consumer price index (cpi) for a fictional country from 1970 to 1980? a.) 1976 - 1978b.) 1972 - 1974c.) 1974 - 1976d.) 1978 - 1980

F(n + 1) = f(n) – 8. if f(1) = 100, what is f(6)?