Solve the LPP using Solver tool and Graphical Method

"A farmer in Iowa owns 45 acres of land. He is going to plant each acre with wheat or corn. Each acre planted with wheat yields $200 profit, requires 3 workers, and requires 2 tons of fertilizer; each with corn yields $300 profit, requires 2 workers, and requires 4 tons of fertilizer. One hundred workers and 120 tons of fertilizer are available.
a. Use Solver to help the farmer maximize the profit from his land.
b. Confirm graphically that the solution from part (a) maximizes the farmer’s profit from his land.
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