What equation represents the relationship shown in the table? (Pls I need help)

Pam buys a sleeve of ball bearings for her skateboard. each of the bearings is 1 1/5 inches wide. the sleeve is 9 3/5 inches long. how many ball bearings are in the sleeve? show your work.

Two customers went to a post office. first customer paid $12 for 14 and 5 envelopes the second paid 24.80 for 10 postcards and 15 envelopes. what is cost of each envelope?

Olga used 100 ounces of flour to make 225 muffins. how many ounces of flour will be used to make 300 muffins?