Find AB. write in simplest form pls n ty

Match each expression with its simplified form.

Apackage of bacon holds 15 strips of bacon. the pancake house uses 17 packages of bacon in the morning and 21 packages in the afternoon. how many more strips were used in the afternoon than the morning?

One of the same side angles of two parallel lines is 20° smaller than the other one. find the measures of these two angles.