Plot 6/2 and 19/2 on a number line

the answer is a if my teacher taught me correct

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.

the answer would be  

a.

3: 1

step-by-step explanation:

12 dolars one is cheaper becasue 3 pairs is 6 means is sock is 2 while the 12 is cheaper