a movie, including the previews, is 2 hours and 40 minutes long. if the previews last 20 minutes. what fraction of the total time is the actual movie? The answer is 7/8 but I need work shown with it

2.40 tiempo de la pelicula  en total

0.20 es el tiempo de avances

tendriamos que restar el tiempo de los avances al tiempo total

lo que nos daria 2.20 que es igual a 7/8

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.