15-20 is -5. If you put 15 on a number line and go back twenty spaces you land on -5 hope this helps.
Answer:
72 hope this helps you!?!?!!?
The answer is 7.58
hope this helped :)
alisa202
ANSWER

EXPLANATION
It was given that, Joan has

and she will use

of it to make place cards.
We want to find how felt she will use for place cards.
We just have to find,



Therefore Joan will use

yards of felt for the place cards.