Can anybody help with this? pretty important

Use the graph of the sine function y=2sinθ shown below

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.

Solve the inequality and graph 6j - 7 < 5