If tom has m marbles and tim has three times as many, then how many marbles does tim have? how many more marbles does tim have than tom? how many marbles do they have together?

here is your mark brainliest

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step-by-step explanation:

the height of the surface increases from the center out to the sides of the road.

step-by-step explanation:

as we move out we move away from the x-axis.

and as mentioned in the problem statement that height of a road increases when we move away from the center x.

hence proved that 3rd option

the height of the surface increases from the center out to the sides of the road.

is the correct option.