Kristen has yards of ribbon. She wants to cut it into equal parts to make hair ribbons for her daughter's 9 dolls. How long, in yards, will each doll's hair ribbon be?

Ineed here’s a picture of the question

Andy has $310 in his account. each week, w, he withdraws $30 for his expenses. which expression could be used if he wanted to find out how much money he had left after 8 weeks?

Need me know if option a, b,c are wrong so ik its d