A farm grows plants A and B on its 500 acres of land. An acre of plant A brings a $1200 profit; an acre of plant B bring

[answerhappygod]

A farm grows plants A and B on its 500 acres of land. An acre of
plant A brings a $1200 profit; an acre of plant B brings a profit
of $1800. During the planting season, 1400 hours of planting time
is available. Each acre of plant A requires 2 hours, while each
acre of plant B requires 5 hours. The company seeks maximum profit
from its planting decision.
(a) Please clearly define decision variables.
(b) Please write down the objective function of this problem
including whether to minimize or maximize.
(c) Please write down all constraints for this problem.