Madeline is saving money to buy a sweater that costs $45. if she has saved 15% of the money she needs, how much more does she have to save?

You'll have to change 15% to 0.15. then multiply is by 45$ and you'll get
6.75$ then subtract 6.75$ from 45 and you'll get 38.25, she needs to save.

6/9 i need more characters in my answer