Page 487 - Algebra 1

*11. Multiple Choice When one set of data values increases as the other set of data values (71) decreases, what type of correlation does this represent?
A positive B negative C constant D none *12. Elections The table shows the voter turnout for National Federal Elections.
(71)
U.S. Voter Turnout (in millions)
Year
1990
1992
1994
1996
1998
2000
2002
2004
Number of Voters (in millions)
68
104
75
96
73
106
80
122
a. Use the data to make a scatter plot.
b. Does the scatter plot show any trend in the data?
*13. Generalize If a scatter plot shows a negative correlation, what can you say about (71) the relationship between the two sets of data values?
14. Error Analysis Student A and Student B combine the radicals. Which student is (69) correct? Explain the error.
*15. Biking Randy biked √ 27 miles on the bike trail. He backtracked √3 miles, and (69) then proceeded √ 12 miles to finish the trail. How far is Randy from his starting
point?
16. Multiple Choice Which of the following situations describes inclusive events?
(68) A
rolling a sum of 5 or a sum of 4 with two number cubes
B rolling a sum of 3 or a factor of 6 with two number cubes
C rolling two 5’s or a sum of 8 with two number cubes
D rolling two 4’s or a sum of 9 with two number cubes
17. Write If a fair coin is used, what is the probability that one toss will result in either (68) heads or tails? Explain why your answer makes sense.
*18. Nutrition Each day Paolo tries to consume at least 40 grams of protein. One day (66) he has two soy shakes, each with 15 grams of protein, as well as a bowl of peanuts,
containing 5 grams of protein. Write an inequality describing how much more protein Paolo should consume that day.
19. Line 1 passes through the points (2, -6) and (4, 6). Line 2 passes through the (65) points (0, 1) and (6, 0). Are the lines parallel or perpendicular?
Student A
√ 8√4y2z3-3yz 49z
= 8 · 2yz√z - 3yz · 7√z = 16yz√z - 21yz√z
= -5yz√ z
Student B
√ 8√4y2z3-3yz 49z
= 8 · 4yz√ z - 3yz · 7√z = 32yz√z - 21yz√z
= 11yz√z
472 Saxon Algebra 1