Aboat travels 8 miles north from point a to point b. then it moves in the direction s 40º w and reaches point c. finally, it turns s 40º e and returns to point a

Can you answer my question? will mark brainiest!

Answer the following for 896.31 cm= km 100cm = 1m 1000m = 1km a) 0.0089631 b) 0.0089631 c) 8.9631 d) 89.631

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?