Ella bought some key chains and spent a total of $24.each key chain cost the same whole-dollar amount. she bought between 7 and 11 key chains. how many key chains did ella buy?show your work

1. what is the formula for finding the vertical distance between two points on a coordinate plane?

The classrooms are trying to raise $1,200.00 for charity. mrs. leblanc's class has raised 50%. mr. patel's class has raised $235.14 ms. warner's class has raised 1/3 as much as mrs. leblanc's class. how much more money is needed to reach the goal of $1,200.00?

Acoin bank containing only dimes and quarters has 12 more dimes than quarters. the total value of the coins is $11. how many quarters and dimes are in the coin bank?