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

x=-7

step-by-step explanation:

x+3=-10

-10+3=-7

x=-7

m∠a is 90°

m∠b is 40°

step-by-step explanation:

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answer: i dont know i want points

step-by-step explanation: