Solve sinx - (1/root2) <0 for 0

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 in pounds, w, of the contents that liz will ship to her friend if she must use a medium flat-rate box. use the drop-down menus to explain your answer.

Can someone show me step by step how to do this?

Find the average rate of change for the given function drom x=1 to x=2