If chris  wants  to  buy  a  cell  phone  that  costs  $215.00.  his  parents  say  chris  must  raise  35%  of  the  money  himself.  how  much  money  must  chris  raise?

To solve this problem you can do a proportion

to find 'x', we have to cross multiply the numbers.

and

this will get you

to get 'x', we have to divide by 100 on each side


your answer will be

so, Chris must raise 75.25 dollars by himself

Aand b is what i think

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.