Write a phrase that could be modeled by the expression n + 2n

Answer with explanation:

Let age of mine be n years.

Age of my father is twice of mine =2 n years.

Find the sum of age of me and my father.

= n+2n

distance covered by pamela in 9 l of fuel = 99km

let us apply unitary method here.

distance covered by pamela in 1 l of fuel =99/9 =11 km

now let us find distance covered by pamela if she has 12 l of fuel.

distance covered in 12 l = distance covered in 1 l of fuel * 12

we know that distance covered by here in 1 l is 11 km.

so distance covered in 12 l of fuel = 11*12 = 132 km.

i believe the answer is d.

hope it you! : d