7.2 Linear Programming 1. Petrus wants to plant x orange trees and y lemon trees.
He wants at least 3 oranges trees and at least 2 lemon trees.
(a) Write down one inequality in x and one inequality in y to
represent these conditions.
(b) There is space on his land for no more than 9 trees.
Write down an inequality in x and y to represent this
condition.