E=420-7s the elevation E in meters of a skydiver s seconds after parachute is given by the equation above. What is the best interpretation of 420 as shown in this equation

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E  = 420  −  7 s  The elevation,  E  , in meters, of a skydiver  s  seconds after parachute activation is  given by the equation above. What is the best interpretation of  420  as shown in the equation?

a) The skydiver started diving at an elevation of  420  meters.

b) The skydiver activated the parachute at an elevation of  420  meters.

c) The skydiver took  420 seconds after parachute activation to reach the ground.

d) The skydiver's elevation decreased by  420  meters per second after parachute activation.

Explanation:

Answers is that The skydiver's elevation decreased by  420  meters per second after parachute activation.