What is the order of the set a={-1,20,3,17,5}

Hey!

Hope this helps...

I'm assuming your talking about least to greatest, OR greatest to least.  If so, that's what I'll do...

Least to Greatest: -1, 3, 5, 17, 20

Greatest to Least: 20, 17, 5, 3, -1

Unfortunately I did not completely understand the question, for future reference please give AS MUCH detail as possible so that your fellow members can help you ASAP...

And thanks for using !

the one below it is a function

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.