Nour drove from the dead sea up to amman, and her altitude increased at a constant rate.
when she began driving, her altitude was 400 meters below sea level.
when she arrived in amman 2 hours later, her altitude was 1000 meters above sea level.
let a(t) denote nour's altitude relative to sea level a (measured in meters) as a function of time t (measured in hours).
write the function's formula.

  A(t) = 700t -400

Step-by-step explanation:

The rate of change of Nour's altitude was ...

  (1000 m -400 m)/(2 h) = 700 m/h

Her initial altitude was -400 m (relative to sea level), so the formula for her ascent can be written in slope-intercept form as ...

  A(t) = 700t -400

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step-by-step explanation:

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