Please neep help gain

358.954ft^2

Hope this helps.

TSA=760

Step-by-step explanation:

A=B*H*1/2

A=15*8*1/2

A=60*2

A=120

   +

A=L*W

A=20*15

A=300

   +

A=L*W

A=20*17

A=340

TSA=760

y=3x+4

step-by-step explanation:

given the points a(0,4) and b(-4, -8)

eqn of line ab: (y-4)/(x-0)=(-8-4)/(-4-0)

(y-4)/x=-12/-4=3

y=3x+4

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.