Oil Imports from Mexico Crude oil imports to the United States from Mexico for 2009–2013 could be approximated by I ( t ) = − 39 t 2 + 800 t − 3 , 000 thousand barrels per day ( 9 ≤ t ≤ 13 ) where t is time in years since the start of 2000. 3 According to the model, approximately when were oil imports to the United States greatest? How many barrels per day were imported at that time? (Round the answer to two significant digits.) [ HINT: See Example 1.]
Oil Imports from Mexico Crude oil imports to the United States from Mexico for 2009–2013 could be approximated by I ( t ) = − 39 t 2 + 800 t − 3 , 000 thousand barrels per day ( 9 ≤ t ≤ 13 ) where t is time in years since the start of 2000. 3 According to the model, approximately when were oil imports to the United States greatest? How many barrels per day were imported at that time? (Round the answer to two significant digits.) [ HINT: See Example 1.]
Solution Summary: The author calculates the year in which the oil import to the United States from Mexico is greatest, and the amount of oil in barrels per day imported at that time.
Oil Imports from Mexico Crude oil imports to the United States from Mexico for 2009–2013 could be approximated by
I
(
t
)
=
−
39
t
2
+
800
t
−
3
,
000
thousand barrels per day
(
9
≤
t
≤
13
)
where t is time in years since the start of 2000.3 According to the model, approximately when were oil imports to the United States greatest? How many barrels per day were imported at that time? (Round the answer to two significant digits.) [HINT: See Example 1.]
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