We have to use the distance formula between the two points provided
Rice: .5(8) = 4kg (4000 g)
Popcorn: 150(12) = 1800 g
Total mass = mass of rice (4000 g) + mass of popcorn (1800g)
So...
Total mass = 5,800 g (or 5.8 kg)
You simply multiply all the options
3x2x3= 18 possibilities
P^5 / P^2
The base are equal, so we should to subtracting the powers only
Dividing exponential expressions
P^5 / P^2 = P^(5-2)
:. = P^3