Which set of side lengths cannot form a triangle 3, 5 and 7 inches 10 , 12 and 20 feet 15 ,19 and 31 yards 43, 56 and 100 m

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.