John owns a hot dog stand. He has found that his profit is

Last updated: 8/12/2022

John owns a hot dog stand. He has found that his profit is given by the equation P= -x² + 60x + 71, where x is the number of hot dogs sold. How many hot dogs must he sell to earn the maximum profit? 20 hot dogs 31 hot dogs 41 hot dogs 30 hot dogs