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The expression - 250 + 16z represents a submarine that began at a depth of 250 feet below sea level and ascended at a rate of 16 feet per minute. What was the depth of the submarine after 9 minutes?
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42 votes
The expression - 250 + 16z represents a submarine that began at a depth of 250 feet below sea level

and ascended at a rate of 16 feet per minute. What was the depth of the submarine after 9 minutes?

User CypherX
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2.5k points

1 Answer

23 votes
23 votes
= -250 + 16z
= -250 + 16(9)
= -250 + 144
= -106 feet
User Starblue
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3.3k points
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