The total profit P(x) (in thousands of dollars) from the

Last updated: 7/10/2022

The total profit P(x) (in thousands of dollars) from the sale of x hundred thousand pillows is approximated by P(x)= x³ + 12x²+60x-400, x≥5. Find the number of hundred thousands of pillows that must be sold to maximize profit. Find the maximum profit.