Which algebraic expression has like terms?
o 9n - 2n+3-4n
O 7n2+3n-3-6172
O 7n2 +4n-37 – 512
O 67° -4n4+67-512

6. sarah saved $12.75 every week for a number of weeks, w. she received an additional $25 during the last week in which she saved money. write and solve an equation to find the number of weeks, w, for which sarah had saved money if she has $114.25 now.