Sarah and Annie brought some quarters to an arcade. Sarah has 28 more quarters than Annie. The equation given below shows this relationship, where m represents the number of quarters Sarah has, and n represents the number of quarters Annie has.

m= 28 + n

If Sarah has 39 quarters, how many quarters does Annie have?

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 kind of bond pays interest which is exempt from tax?

Angela took a general public aptitude test and scored in the 88th percentile for aptitude in accounting. what percentage of the scores were at or below her score?