Nelson finds a video game for $38.50. The game is on sale for $31.57. What is the percent of discount on the game?

You are at a restaurant and owe $38 for your meal. you want to leave a 20% tip. how much will your tip be?

Elizabeth claims that the fourth root of 2 can be expressed as 2^m since (2^m)^n = 2. find the values of m and n for the case where elizabeth's claim is true.

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.