Answer 1

Here is the answer

#1 You want both of them to be true(AND):
if (x < 7&&y > 9){
//codes
}

#2 You want just one of them to be true (OR):
if (x < 7||y > 9){
//codes
}

you can stack as many as you want like
if (x<9&&y>9&&z==5){
//codes
}

hope it helps :)

Answer 2

if(k > 4 && k < 7){}

I hope I’m understanding your question. It’s not worded very clearly