Page 201 - Algebra 1

19. Generalize What effect do large intervals have on the appearance of a graph? (27)
*20. Sales The circle graph shows the amounts of orange juice and fruit (27) punch sold each month. Explain why this graph is misleading and determine what may be a more appropriate graph to compare
the sales of the two beverages.
Fruit Juice Sales
Orange Juice 42%
21. Model Make a stem-and-leaf plot of the following temperatures in Woodmont: (22)
72°F, 74°F, 63°F, 62°F, 63°F, 78°F, 65°F, 51°F, 53°F, 53°F, 61°F, 80°F.
22. Hair Growth Hair grows approximately half an inch each month. (12) John’s hair is 2 inches long. Let m be the number of months. The
formula h = 2 + 0.5m calculates the length John’s hair will be in m months if he does not cut it. Complete the table and graph the solutions.
23. A television remote has a key for each of the channels 0 through 9. If one key is (14) chosen at random, what is the chance that channel 5 is chosen? Write your answer
as a percent.
24. Multi-Step Todd has 18 boxes of cards with x cards in each box. He divides them (12) equally with 5 friends. The expression 18x ÷ 6 represents the number of cards each
person has. Simplify the expression and justify each step. 25. Justify Evaluate 5.2 - 1.6 + 4.08 + 8. Justify each step.
(10)
26. Generalize In unit analysis, you often need to apply un_it ratios_multiple times to
1m
(8) convert to the desired units. For example, 4518 cm2 · 100 cm · 100 cm = 0.4518 m
converts from square centimeters to square meters. State a general rule for applying a unit ratio t_he correct number of times to perform a unit conversion.
15 · $2 + (23 - 15) · 4 · $2 to show how much someone will pay if they go to this gym 23 times in a month.
29. Analyze Given the equations a = (1.01)x and b = (0.99)x, which value, a or b, (3) grows smaller as the exponent x grows larger?
y
Fruit Punch 58%
m
h
4
6
10
20
2
27. Justify Evaluate 3 + (5 - 2 + 2 ). Justify each step.
(7) 4
28. Consumer Economics A gym charges $2 a visit for the first 15 visits in a month.
1m 2
(4) After that, the cost is reduced to _1 of the price per visit. Use the expression _1 4
30. Write Write a possible situation that could be represented by the graph at the right. (Inv 2)
x
186 Saxon Algebra 1