Find the measure of arc EFC

Solve for x i'll try to attach the files bc it's not letting me for some reason

Given: circle o, cd is diameter, chord ab || cd. arc ab = 74°, find arc ca.

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.