Answer:
a) (-2,2), (-1,-1), (1,-1), (3,7)
b) x=1.4
If you set it up in cross multiplication then you would have (x/100 = 45/54) then cross multiply so then i would look like this (54x/4,500) so from there you would divide 54 from 4,500 i hope this helps in any way oh and it should come up to be 83.3333333 which would be 83% lol
190. Count it out on your fingers, starting with -10,-15, and -20. Then count out both hands.