A play station costs $500, but you want to only pay $450. How much discount in percents do you want?

The lines shown below are parallel. if the green line has a slope of -1, what is the slope of the red line?

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

Avery’s piggy bank has 300 nickels, 450 pennies, and 150 dimes. she randomly picks three coins. each time she picks a coin, she makes a note of it and puts it back into the piggy bank before picking the next coin.