Amy gets 3 points for every correct answer and looses 2 point for every wrong answer. If she answered 50 questions and scored 100 points, write a system of equations.

The distance between mike’s house and the grocery store is 4/5 of a mile. mike has walked 1/2 of a mile from his house to the grocery store. how much farther does he needs to walk to reach the grocery store? a. 13/10 miles b. 3/4 of a mile c. 3/10 of a mile d. 2/5 of a mile