iPhone sales from the 2nd quarter in 2007 through the 2nd quarter in 2008 can be approximated by S(t) = -390t2 + 3,300t - 4,800 thousand phones (2 sts 6) %3D in quarter t. (t = 1 represents the start of the first quarter of 2007.)t iPhone sales (thousands) 2,000 1,500 1,000 500 3. 4 6. 2007 Q2 2008 Q2 O (a) Compute S'(t). S'(t) = How fast were the iPhone sales changing in the second quarter of 2008 (t = 6)? (Be careful to give correct units of measurement.) %3! S'(6) thousand phones per quarter %3D (b) According to the model, iPhone sales did which of the following? O decreased at a faster and faster rate during 2007 (the interval [2, 4]) O increased at a slower and slower rate during 2007 (the interval [2, 4]). increased at a faster and faster rate during 2007 (the interval [2, 4]) decreased at a slower and slower rate during 2007 (the interval [2, 4])
iPhone sales from the 2nd quarter in 2007 through the 2nd quarter in 2008 can be approximated by S(t) = -390t2 + 3,300t - 4,800 thousand phones (2 sts 6) %3D in quarter t. (t = 1 represents the start of the first quarter of 2007.)t iPhone sales (thousands) 2,000 1,500 1,000 500 3. 4 6. 2007 Q2 2008 Q2 O (a) Compute S'(t). S'(t) = How fast were the iPhone sales changing in the second quarter of 2008 (t = 6)? (Be careful to give correct units of measurement.) %3! S'(6) thousand phones per quarter %3D (b) According to the model, iPhone sales did which of the following? O decreased at a faster and faster rate during 2007 (the interval [2, 4]) O increased at a slower and slower rate during 2007 (the interval [2, 4]). increased at a faster and faster rate during 2007 (the interval [2, 4]) decreased at a slower and slower rate during 2007 (the interval [2, 4])
Calculus: Early Transcendentals
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Chapter1: Functions And Models
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![iPhone sales from the 2nd quarter in 2007 through the 2nd quarter in 2008 can be approximated by
S(t) = -390t + 3,300t -
4,800 thousand phones (2 <t < 6)
%3D
in quarter t. (t 1 represents the start of the first quarter of 2007.)t
%3D
iPhone sales (thousands)
2,000
1,500
1,000
500
0.
1.
2.
4
9.
2007 Q2
2008 Q2 1
(a) Compute S'(t).
S'(t) =
(1),S
How fast were the iPhone sales changing in the second quarter of 2008 (t = 6)? (Be careful to give correct units of
measurement.)
%3D
s'(6) =
thousand phones per quarter
%3D
(b) According to the model, iPhone sales did which of the following?
O decreased at a faster and faster rate during 2007 (the interval [2, 4])
increased at a slower and slower rate during 2007 (the interval [2, 4]).
increased at a faster and faster rate during 2007 (the interval [2, 4])
O decreased at a slower and slower rate during 2007 (the interval [2, 4])
3.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fbc4151ed-9b20-4bc9-af95-4a43e11482e2%2Ff40bbf7e-3ba7-4809-8292-2d0a7b34b738%2Fyo9vpeb_processed.jpeg&w=3840&q=75)
Transcribed Image Text:iPhone sales from the 2nd quarter in 2007 through the 2nd quarter in 2008 can be approximated by
S(t) = -390t + 3,300t -
4,800 thousand phones (2 <t < 6)
%3D
in quarter t. (t 1 represents the start of the first quarter of 2007.)t
%3D
iPhone sales (thousands)
2,000
1,500
1,000
500
0.
1.
2.
4
9.
2007 Q2
2008 Q2 1
(a) Compute S'(t).
S'(t) =
(1),S
How fast were the iPhone sales changing in the second quarter of 2008 (t = 6)? (Be careful to give correct units of
measurement.)
%3D
s'(6) =
thousand phones per quarter
%3D
(b) According to the model, iPhone sales did which of the following?
O decreased at a faster and faster rate during 2007 (the interval [2, 4])
increased at a slower and slower rate during 2007 (the interval [2, 4]).
increased at a faster and faster rate during 2007 (the interval [2, 4])
O decreased at a slower and slower rate during 2007 (the interval [2, 4])
3.
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