Checkpoint 11 Worked-out solution available at LarsonAppliedCalculus.com From 2001 through 2013, the sales per share S (in dollars) for Wal-Mart can be modeled by S = 0.1655 t 2 + 6.129 t + 42.04 , 1 ≤ t ≤ 13 Where t represents the year, with t = 1 corresponding to 2001. At what rate was Wal-Mart’s sales per share changing in 2010? (Source: Wal-Mart Stores, Inc.)
Checkpoint 11 Worked-out solution available at LarsonAppliedCalculus.com From 2001 through 2013, the sales per share S (in dollars) for Wal-Mart can be modeled by S = 0.1655 t 2 + 6.129 t + 42.04 , 1 ≤ t ≤ 13 Where t represents the year, with t = 1 corresponding to 2001. At what rate was Wal-Mart’s sales per share changing in 2010? (Source: Wal-Mart Stores, Inc.)
Solution Summary: The author explains how Wal-Mart's sales per share changing in 2010 can be modelled by S=0.1655t2+6.129t+42.04.
Checkpoint 11 Worked-out solution available at LarsonAppliedCalculus.com
From 2001 through 2013, the sales per share S (in dollars) for Wal-Mart can be modeled by
S
=
0.1655
t
2
+
6.129
t
+
42.04
,
1
≤
t
≤
13
Where t represents the year, with t = 1 corresponding to 2001. At what rate was Wal-Mart’s sales per share changing in 2010? (Source: Wal-Mart Stores, Inc.)
find the zeros of the function algebraically:
f(x) = 9x2 - 3x - 2
Rylee's car is stuck in the mud. Roman and Shanice come along in a truck to help pull her out. They attach
one end of a tow strap to the front of the car and the other end to the truck's trailer hitch, and the truck
starts to pull. Meanwhile, Roman and Shanice get behind the car and push. The truck generates a
horizontal force of 377 lb on the car. Roman and Shanice are pushing at a slight upward angle and generate
a force of 119 lb on the car. These forces can be represented by vectors, as shown in the figure below. The
angle between these vectors is 20.2°. Find the resultant force (the vector sum), then give its magnitude
and its direction angle from the positive x-axis.
119 lb
20.2°
377 lb
Chapter 2 Solutions
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