Prime numbers have
a: less then two factors
b: more then two factors
c: exactly two factors
d: less than or equal to two factors

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.

the first one is x^2+2x+2

the second one is x^2+4

the last one is x^2-4x+8