A tectonic plate in Earth's crust moves at a constant rate of 4 centimeters per year. In a different world another tectonic plate moves at a constant rate of 30 centimeters in ten years.

Gretchen is setting up for a banquet. she has 300 chairs and needs to distribute them evenly among t tables. how many chairs should she put at each table? write your answer as an expression.

Use the distributive law to multiply. 3(4x + 5y + 6)

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?