Rachel recieved a $70 gift card for a coffee store. she used it in buying some coffee that coffee that cost $7.73 per pound. after buying the coffee, she had $39.08 left on her card. how many pounds of coffee did she buy?

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.