Danny earned $20,000 last year This year he earned $12,000. What is the percentage difference?

Ben wants to play a carnival game that costs $2. in his pocket he has 5 red tickets worth 35 cents each, and 15 blue tickets worth 10 cents each. which of the following systems of inequalities correctly represents the constraints on the variables in this problem? let represent the red tickets and b represent the blue tickets.

What signals you that factoring by grouping is the best method to use when factoring a problem?

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base