Page 166 - Algebra 1

14. Error Analysis Two students solve 5a + 4 = 34. Which student is correct? Explain (23) the error.
Student A
5a + 4 = 34 5a + 4 =
_ _34 55
a + _4 = _3 4 55
__ a = 34 - 4
a = 30 5
a=6
55 _
Student B
5a + 4 = 34 +__4 +__4
5a = 38 _
a = 38 5
15. Multiple Choice The graph shows the points scored by Michaela (22) and Jessie during the first five basketball games of the season.
What conclusion can you make from the graph?
Basketball Points Score
22
20 A Michaela is the best player on the team. 18 16
B Michaela usually scores more points than Jessie.
C Neither player will score more than 18 points
in the next game.
D Jessie does not play as much as Michaela.
14 Key
12 Michaela 10 Jessie
8 6 4 2 0
*16. Write Two sets of data represent the number of bottles of water and the number (22) of bottles of juice a store sells each month. Give reasons why the following types
of graphs would be appropriate to represent the data: a double-bar graph, a double-line graph, and two stem-and-leaf plots.
17. Choose an appropriate graph to display the portion of students in a class who (22) have birthdays in each month. Explain your choice.
18. Find the value of 3z - 2(z - 1)2 + 2 for z = 4. (9)
19. Cooking A recipe calls for 2.5 cups of orange juice for a batch of fruit drink. (20) In the equation, y = 2.5x, y represents the number of cups of orange juice and
x represents number of batches of fruit drink. Make a table when x = 1, 2, 3, and 4 batches of fruit drink. Then graph the ordered pair in your table.
20. Analyze “Three more than x” can be written as x + 3 or 3 + x. Can “three less (17) than x”be written as x - 3 or 3 - x? Explain.
21. Multi-Step Population growth for a certain type of animal is determined by the
(16) formula Nn = Ni2n, where Ni is the initial population size and Nn is the population
size after n generations. If the initial population is 45, what is the difference between the population size after the fourth generation and the population size after the sixth generation?
Lesson 25 151
Game 1 Game 2 Game 3 Game 4 Game 5
Points