HOW DO YOU SEE IT? The graph below shows a company’s estimated profits for different advertising expenses. The company’s actual profit was $ 936 , 660 for an advertising expense of $ 300 , 000. (a) From the graph, it appears that the company could have obtained the same profit for a lesser advertising expense. Use the graph to estimate this expense. (b) The company’s model is P = – 140.75 x 3 + 5348.3 x 2 – 76 , 560 , 0 ≤ x ≤ 35 where P is the profit (in dollars) and x is the advertising expense (in tens of thousands of dollars).Explain how you could verify the lesser expense from part (a) algebraically.
HOW DO YOU SEE IT? The graph below shows a company’s estimated profits for different advertising expenses. The company’s actual profit was $ 936 , 660 for an advertising expense of $ 300 , 000. (a) From the graph, it appears that the company could have obtained the same profit for a lesser advertising expense. Use the graph to estimate this expense. (b) The company’s model is P = – 140.75 x 3 + 5348.3 x 2 – 76 , 560 , 0 ≤ x ≤ 35 where P is the profit (in dollars) and x is the advertising expense (in tens of thousands of dollars).Explain how you could verify the lesser expense from part (a) algebraically.
Solution Summary: The author analyzes how the company's profit at an advertising expense is 936,660 — the same profit also occurs at a lesser expense.
HOW DO YOU SEE IT? The graph below shows a company’s estimated profits for different advertising expenses. The company’s actual profit was
$
936
,
660
for an advertising expense of
$
300
,
000.
(a) From the graph, it appears that the company could have obtained the same profit for a lesser advertising expense. Use the graph to estimate this expense.
(b) The company’s model is
P
=
–
140.75
x
3
+
5348.3
x
2
–
76
,
560
,
0
≤
x
≤
35
where
P
is the profit (in dollars) and
x
is the advertising expense (in tens of thousands of dollars).Explain how you could verify the lesser expense from part (a) algebraically.
Tanisha Vizquez owns a wallpaper hanging business. Her charge, C, for hanging wallpaper is $15 plus $0.20 per square foot of wallpaper she
hangs, or C = 15 +0.20s, where s is the number of square feet of wallpaper she hangs.
......
(a) Graph C= 15+ 0.20s, for ss200.
O A.
O B.
OC.
AC
50
AC
50
AC
50
25
25
25
ok
100
200
100
200
100
200
(b) From the graph, estimate her charge if she hangs 20 square feet of wallpaper.
Her charge is $
(c) If her charge is $35, use the equation for C to determine how many square feet of wallpaper she hung.
The number of square feet is . (Type a whole number.)
At sea level, the air pressure is 15 psi. As the vehicle goes underwater, the pressure
increases and as it goes up into the air, pressure decreases. The graph given below
shows the variation of pressure on the vehicle over time. Match the following letters
with their correct corresponding statements.
y4
Flying:
Going up
(20,40) (30,40)
40
B
Underwater:
B O
30
Going down
Underwater:
Same depth
20
O (0.15)
D
Q(50,15)
(40,15)
Underwater:
Coming up
10
(60,5)
10
20
30
40
50
60
E •
• At sea level
Depth (in ft)
Pressure (in psi)
Puji paid $7.50 for three pounds of gummy candy. Note: 2 pounds of candy costs $5.00.
Puji created a graph from the data on her chart. Is her graph correct? Why or why not?
Chapter 3 Solutions
Bundle: College Algebra, Loose-leaf Version, 10th + WebAssign Printed Access Card for Larson's College Algebra, 10th Edition, Single-Term
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