Please help with solving this problem.

What two consecutive odd integers have a sum of -28

Ben bowled 124 and 188 in his first two games. what must he bowl in his third game to have an average of at least 160?

Aword processing program requires a 7- digit registration code made up of the digits 1,2,4,5,6,7 and 9 each number has to be used and no number can be used mor than once how many codes are possible