(12pts) Which equations are equivalent to 8-x

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.

Which of the following is best modeled using a linear equation y=ax+b, where a is less than 0?

Cody ran nine miles on his first day of training. the next day he ran 1/8 that distance. how far did he run the second day?