Sally has sold raffle tickets at an average of 57 per week for the last 5 weeks of the fund raiser. find the total number of tickets she sold for the fund raiser if sally sold 159 tickets for the first five weeks of the sale.

because that’s us why

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.