Disease spreading formula
Where d = number of days
Now, we need to calculate the value of P for the different days
Day 1
P = 6*(1)+5 = 11%
Day 2
P = 6*(2)+5 = 17%
Day 3
P = 6*(3)+5 = 23%
Day 4
P = 6*(4)+5 = 29%
Day 5
P = 6*(5)+5 = 35%
Day 6
P = 6*(6)+5 = 41%
Day 7
P = 6*(7)+5 = 47%
Day 8
P = 6*(8)+5 = 5353%
The disease starts spreading from day 1 and continues to increase day after day in a linear fashion. After day 8 there is no cure for the disease as it exceeds 50%.