Can someone tell me why i can't find my friend

Use the knowledge of x- and y- intercepts to choose the correct graph of the equation 3x+6y=6

Liz is shipping a package to her friend.the maximum weight of a medium flat-rate box is 20 pounds,including the box which weighs 6 ounces.write and solve an inequality to describe the possible weight ,w, of the contents that liz will ship to her friend if she must use a medium flat-rate box.

15m is what percent of 60m; 3m; 30m; 1.5 km? the last one is km not m