a(t) = 210 -5t
(1) What does t represent?
As its given t is in minutes so t represents time.
altitude of the balloon: is incorrect as that will be represented as a(t) as thats altitute
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time after the balloon begins to descend
This is correct answer
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time it takes the balloon to reach the ground:
This is incorrect as it will be some fixed time when balloon will reach ground level
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(2) What does a(t) represent?
altitude of the balloon
This is correct answer
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time after the balloon begins to descend
This is incorrect, time is represented by t
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time it takes the balloon to reach the ground
This is incorrect as it will be some fixed time when balloon will reach ground level and not altitude
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(3) What information will a(5.5) give?
time it takes the balloon to reach an altitude of 5.5 feet
This is incorrect as a(5.5) means altitude a at time t =5.5
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altitude of the balloon after 5.5 minutes
This is correct as a(5.5) means altitude a at time t =5.5
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time it will take the balloon to reach the ground
This is incorrect as a(5.5) means altitude a at time t =5.5
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5.5 minutes
This is incorrect a represents altitude and not time.
a(5.5) means altitude a at time t =5.5
