Page 230 - Algebra 1

x
y
-2
-1
0
1
2
*4. Use a graphing calculator to complete the table of values (30) for the function f(x) = 2x2 - 5. Graph the function.
*5. Solvey=x+_z forz. (29) 3
Solve each equation. Check your answer. 6. 4x+2=5(x+10)
(28)
7. 2(n+_1)=_3n+1+_1n-_1 (28) 32 23
8. A bead is drawn from a bag, kept, and then a second bead is drawn. Identify (33) these events as independent or dependent.
*9. Justify Is the sequence 0.3, -0.5, -1.3, -2.1, ... an arithmetic sequence? Justify (34) your answer.
*10. Write Explain why the sequence 2, 4, 8, 12, 16, ... is not an arithmetic sequence. (34)
*11. Multiple Choice In the rule for the nth term of an arithmetic sequence (34) an = a1 + (n - 1)d, what does d represent?
A the number of terms B the first term
C the nth term D the common difference
*12. Is the sequence 7, 14, 21, 28, ... an arithmetic sequence? If it is, then find the (34) common difference and the next two terms. If it is not, then find the next two
terms.
13. Statistics A poll is taken and each person is asked two questions. (33) The results are shown in the table. What is the probability
that someone answered “yes” to both questions?
14. Predict A number cube labeled 1–6 is rolled two times. What is the probability of
(33) rolling a 2 and then a 3?
*15. Geometry A rectangle with perimeter 10 units has a length of 3 units and a width
(34) of 2 units. Additional rectangles are added as shown below.
2222
3 33 333 3333
P = 10 units P = 16 units P = 22 units P = 28 units a. Write a rule for the perimeter of n rectangles.
b. Use the rule to find the perimeter of 12 rectangles.
*16. Work uniforms include pants or a skirt, a shirt, and a tie or a vest. There are (33) 3 pairs of pants, 5 skirts, 10 shirts, 2 ties, and 1 vest in a wardrobe.
a. What is the probability of choosing a pair of pants, a shirt, and a tie?
b. The pants and shirt from the previous day must be washed, but the tie returns to the wardrobe. What is the probability of choosing pants, a shirt, and a tie the next day?
Question 1
Question 2
Yes
55
30
No
45
70
Lesson 34 215