A helicopter takes off from the roof of a building that is 175 feet above the ground. The altitude of the helicopter increases by 150 feet each minute. (a) Use a formula to express the altitude of a helicopter as a function of time. (Lett be the time in minutes since takeoff and A the altitude in feet.) A-175 +150r (b) Express using functional notation the altitude of the helicopter 210 seconds after takeoff. A(2.5 x ) Calculate that value. (Round your answer to the nearest foot.) ft

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