(x·2)+x(2^2)+(y·2^3)+(y·2^4)=42 solve for xy

Michael is making cookies each badges is 2 cups of flour he plans to use less than 30 cups of flour for cookies so that he has enough left to make muffins he has already used 4 cups of flour for cookies.which statement describes how many more batches of cookies michael can make.1.) michael can make fewer than 13 batches of cookies2.) michael can make fewer than 14 batches of cookies3.) michael can make fewer than 15 batches of cookies4.) michael can make fewer than 26 batches of cookies