Some of the steps in Liam's solution to 3.5(1.25x+0.5)=10.5 are shown. Complete the boxes with reasons for lines 2 and 4 of Liams solution. (The options in the drop down boxes for 2 and 4 are the same)

Astudent simplified a rational expression as shown.

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.

Each of the walls of a room with square dimensions has been built with two pieces of sheetrock, a smaller one and a larger one. the length of all the smaller ones is the same and is stored in the variable small. similarly, the length of all the larger ones is the same and is stored in the variable large. write a single expression whose value is the total area of this room. do not use any method invocations.