I need help!! Thx if answer :)
1.) A submarine is descending to examine the seafloor 2,100 feet below the surface. It takes the submarine 2 hours to make this descent. Write an equation to represent the relationship between the submarine's elevation and time. Use y to represent the elevation and x represents the hour.

2.) Another submarine's descent can be represented as y = -240x, where y is the elevation and x is time in hours. How long will it take this submarine to make the descent?