Manuel ate 1/3 of the crackers on a plate. His brother ate 1/4 of the crackers. There were 5 crackers left on the plate. How many crackers were on the plate to begin with?

The system of equations graphed below has how many solutions? y = 2x + 2

Aword processing program requires a 7- digit registration code made up of the digits 1,2,4,5,6,7 and 9 each number has to be used and no number can be used mor than once how many codes are possible

Charlie tosses five coins. what is the probability that all five coins will land tails up.