Tommy bought 2.25 pounds of gummy bears for $3/lb. how much change will he receive from a $20 bill?

The graph represents the gallons of water in a water tank with respect to the number of hours since it was completely filled

Which type of graph would allow us to compare the median number of teeth for mammals and reptiles easily

White shapes and black shapes are used in a game. some of the shapes are circles. while the rest are squares. the ratio of the number of white shapes to the number of black shapes is 5: 11. the ratio of the number of white cicrles to the number of white squares is 3: 7. the ratio of the number of black circles to the number of black squres is 3: 8. work out what fraction of all the shapes are circles.