What is the double meaning in atticus' statement that "this case is as simple as black and white"?

Match the items with the actions necessary to reconcile the bank statement.(there's not just one answer)1. interest credited in bank account2. fee charged by bank for returned check3. checks issued but not deposited4. deposits yet to be crediteda. add to bank statementb. deduct from bank statementc. add to personal statementd. deduct from personal statement

The solution set for -18 < 5x-3 iso-3х3< xо-3хo3 > x

(a) what do you think will happen if the price of non-gm crops continues to rise? why? (b) what will happen if the price of non-gm food drops? why?