Sally jogged 100 meters in 20 seconds. Jennifer jogged 4 meters per second. Who was traveling at a faster speed? Explain how you know. I dont get it

Jackie purchased 3 bottles of water and 2 cups of coffee for a family for $7.35. brian bought 4 bottles of water and 1 cup of coffee for his family for $7.15. how much does each bottle of water cost? how much does each cup of coffee cost? i need this done

How many $20 bills do you need to have to make $280

Graph the equation. select integers for x