There are 18 paintings in each hall and 5 paintings in the corridor. This table shows how the number of paintings, P, depends on the number of halls, r. r P 4 77 5 95 6 113 7 131 How would you write this as an equation? p = 18г - 5 p = 5 - 18г p = 18г 5 p = 4 18r