To skate at roller heaven, each person must pay a membership fee (m) and a fee for each session
f. art attended five sessions and paid $25 in all. later, when he had attended 10 sessions, he paid $40 in all. how much is the membership fee and how much are the sessions. write a system of two equations with the variables m and f in each to represent this problem.

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.

What are the coordinates of the midpoint of ab? ,1/2) /2,-1) ,-3/2) /2,-2)

Two years ago a man was six times as old as his daughter. in 18 years he will be twice as old as his daughter. determine their present ages.