Billy left home at 9: 00 a. m. and rode his bike to the park at an average speed of 10mph. he arrived at the park at 9: 30. how many miles from the park is billy’s house.

Delbert keeps track of total of the total number of points he earns on homework assignments, each of which is worth 60 points. at the end of the semester he has 810 points. write an equation for delbert’s average homework score a in terms of the number of assignments n.