Please help I forgot how to do problems like these

Translate the following words into an expression: “the quotient of a number and three is five.”

Which letters from the table represent like terms? a and b b and c a and d b and d

Molly shared a spool of ribbon with 12 people. each person received 3 feet of ribbon. which equation can she use to find r, the number of feet of ribbon that her spool originally had?