Chapter 5, Problem 3T

To determine

To calculate: The producer surplus point at the equilibrium point where $D\left(x\right)={\left(x-7\right)}^2$ is the price, in dollars per unit, that consumers will pay for $x$ units of an item, and $S\left(x\right)=x^2+x+4$ is the price, in dollars per unit, that producers will accept for $x$ units.