1i.
Homework 1
1. Identify each of the following as an expression, an inequality or one of these functions: linear, quadratic, exponential, radical, rational, absolute value. For the graphs, identify each different line.
1a. y

2
3 x

6
1b. y = 5(1.03) x
1c. x
2
– 5x + 4
1d. 3x + 8y = -16
1e. y
 x
5

7
1f. y < 3|x – 2| + 5
1g. y

3 x

5

7
1h. 4(0.8) x
+ 5

1j.
2. Each of the following is a graph of real data. Identify the function that would be most appropriate to use as a model (linear, quadratic, exponential, radical, rational, absolute value).
Puget Sound Orca Populations, by Pod
L pod between 1984 and 2000?
J pod?
K pod?
Publication date: 2006 | Originally published in: Cascadia Scorecard Weblog http://www.sightline.org/maps/charts/wildlife_orcapod_06

Between 1980 and 2005?
Between 1990 and 2008?
Between 2005 and 2008? http://www.sightline.org/maps/charts/oil-addiction-linechart
Publication date: 2008 | Topic(s): Economy Energy & Climate |
Northwest GDP and Median Income and the Dow Jones
Dow Jones?
Cascadia GDP?
Median income? http://www.sightline.org/maps/charts/Dow-Median-CS07
Date range: 1985-2007
Caption: Two decades of so-called progress: the Dow soared, Cascadia’s economy doubled, but middle-class incomes barely budged.
Publication date: 2007 | Originally published in: Cascadia 2007 Scorecard