The factors of 90 are: 2*3^2*5
or: 2,45, 3,30, 5,18, 6,15, 9,10, 1,90
in order: 1,2,3,5,6,9,10,15,18,30,45,90
4w+x-4
Because when multiplying by a negative with a negative you will get a positive and multiplying a negative with a positive will get you a negative
It would be 28-10=x because your ending up with 28 after earning 10 you would get that. Hope this works!
