Akeyboard that cost $475 is marked down 15% for a sale. how much is the savings.

Steps:
find 15% (since discount is how much you saved)

percent=parts out of 100
15%=15/100=1.5/10=0.15/1=0.15
'of' means multiply
0.15 times 475
71.25
savings=how much you saved
you saved 15%
saved=$71.25

The first one, i believe, would be correct. all the others have one thing in common, and that's that they have repeating numbers. in the second one, x and y have repeating 6's and 3's, and in the third, x and y have repeating 6's as well. in the last one, there are repeating 3's. the first one has no repeating numbers.

Ithink is a. true, but not sure