41.
f(x)=133.81x; domain: [0, ∞); range: [0, ∞)
0.0887; it means that 3 oz=0.0887 liter.
0.3549
43.
No d-intercept because d≥0; y-intercept: 1. It means that the pressure at sea level (d=0) is 1 atm.
P(0)=1, P(10)≈1.3, P(33)=2, P(100)≈4.03
132 ft
45.
C=50x+6000
The y-intercept is the fixed overhead cost.
110
47.
R=900−30x
$720
Ten days after the first of the month
49. 70
51.
y=227 (x−150)+30
45
690 mg /m3
53.
$480
$800
$2600
$15,000
$26,667
$45,000
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