Which equation shows the commutative property of addition?

a. 4+3=3+4

b. 1(3)=3

c. (2+7)+12=2+(7+12)

d. 4+0=4

i really am bad with algebra ii, haha.

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 table shows the balance of a money market account over time. write a function that represents the balance y (in dollars) after t years.

There is an entrance to the computer room at point e which lies on ab and is 5 feet from point a. plot point e on the coordinate plane. find the distance from the entrance at point e to the printer at point e