3. The cost price of each product is 120 yuan. During the trial sales phase, the relationship between the selling price $x$ (yuan) of each product and the daily sales volume $y$ (units) is shown in Table 2. If the daily sales volume $y$ is a linear function of the selling price $x$, to maximize profit, what should the selling price of each product be set to? What is the daily sales profit at this price? (Sales profit = Selling price - Cost price)
Table 2
\begin{tabular}{|r|r|r|r|}
\hline$x$ (yuan) & 130 & 150 & 165 \\
\hline$y($ units $)$ & 70 & 50 & 35 \\
\hline
\end{tabular}
(Answer: When the selling price is set to 160 yuan, the maximum daily profit is 1600 yuan.)