I’m not good at graphs please help

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  (d)  x = 2

Step-by-step explanation:

You can see that the graph is symmetrical about a vertical line that passes through the low point. That low point has an x-coordinate of 2, so the vertical line has the equation ...

  x = 2

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.