HELPPP WHATS THE PEREMITER FOR A AND B

Need on this geometry question. explain how you did it.

Apackage of orgainc strwberries costs $1.50 while there in season and $2.25 when not in season what the percent increase

Aprobability experiment is conducted in which the sample space of the experiment is s={7,8,9,10,11,12,13,14,15,16,17,18}, event f={7,8,9,10,11,12}, and event g={11,12,13,14}. assume that each outcome is equally likely. list the outcomes in f or g. find p(f or g) by counting the number of outcomes in f or g. determine p(f or g) using the general addition rule.