Page 519 - Algebra 1

23. Multiple Choice Which inequality describes the graph? (73)
-6 -4 -2 0 2 4 6
A -3<x<1 B -3≤x<1 C -3<x≤1 D -3≤x≤1
24. Analyze What are the solutions to the compound inequality x > 3 OR x < 5? Explain (73) your answer.
*25. Climate The heat index displays apparent air temperatures in relation to the
(71) actual air temperature. The table shows the apparent air temperature for different
humidity levels given that the actual air temperature is 85°.
a. Use the data to make a scatter plot.
b. Do the data values show a positive correlation, a negative correlation, or
no correlation?
26. Data Analysis Use the values from the table to draw a scatter plot.
(71)
Humidity Level (percent)
10
20
30
40
50
60
70
80
90
100
Apparent Air Temperature (°F)
80
82
84
86
88
90
93
97
102
108
x
1
2
3
4
5
6
y
6
11
19
24
28
34
27. Analyze A book has 12 chapters about flying birds, 5 chapters about flying (68) insects, 4 chapters about land insects, and 4 chapters about land mammals. If
the probability of picking a chapter about certain types of animals is _8 , what 25
type of animal is the chapter about?
28. Multi-Step A new exercise facility recently opened up. Its initial promotional rate (67) for new members, represented by y = $20 + $6x, includes a monthly fee plus an
additional amount for x services.
a. How many services do new members receive before paying the same amount as
a regular fee of $32?
b. Write an equation describing the regular rate for the facility.
c. Classify the system of equations for the promotional and regular facility rates.
29. Snowfall In1947,MountLocke,Texas,had23.5inchesofsnow—itsgreatestyearly (66) snowfall. The greatest monthly snowfall recorded was 20.5 inches, which occurred
in January, 1958. Since the record wasn’t broken in 1958, how many more inches of snow could Mount Locke, Texas, have had that year?
30. Multi-Step The sum of Kaleigh and Dwayne’s ages is 30. Three times Kaleigh’s (63) age minus twice Dwayne’s age equals 5. How old is César if he is five years
younger than Kaleigh?
504 Saxon Algebra 1