Upload
others
View
20
Download
0
Embed Size (px)
Citation preview
Name: _______KEY____________________________________________ Date:_________________ H10: Function Unit Test #1 Review
Solving Equations: 1. 7w + 2 = 3w + 94
w = 23 2. 4w – 2(1 – w) = -‐38
w = -‐6
3. 12 – 3(2w + 1) = 7w – 3(7 + w) w = 3
4. 25 = !!!− 10
x = 52.5
5. Find 4 consecutive even integers such that the sum of the first and fourth is 3047. 1522, 1523, 1524, 1525 *change problem to read sum of FIRST and fourth is 3047
6. The length of a rectangle is 3 cm greater than its width. The perimeter is 24 cm. Find the dimensions of the rectangle. Width = 4.5 cm Length = 7.5 cm
Solve for x and state any restrictions: 7. bx – cx = -‐c
x = 𝒄𝒄!𝒃
; 𝒄 ≠ 𝒃
8. !!! != 𝑚 + 𝑛
x = 2(m + n) + 2 or 2m + 2n + 2
9. !!2𝑥 − 12 = !
!
𝒄𝒅𝟐𝒅𝒂
+ 6; a, b, and d ≠ 0
10. c(x + 2) – 5 = b(x – 3)
𝒙 = 𝟑𝒃 + 𝟐𝒄 − 𝟓
𝒃 − 𝒄;𝒃 ≠ 𝒄
11. 𝑆 = 2πr! + 2πrh; solve for h
𝒉 = 𝑺 − 𝟐𝝅𝒓𝟐
𝟐𝝅𝒓
12. 𝐴 = !!ℎ 𝑏! + 𝑏! ; solve for 𝑏!
𝒃𝟐 = 𝟐𝑨𝒉− 𝒃𝟏
Solving Inequalities, graph your solution: 13. 2 – 3z > 7(8 – 2z) + 12
z > 6
14. 6x – 13 < 6(x – 2) All Real Numbers
15. 5𝑎 − 4 > 16 𝑜𝑟 3𝑎 + 2 < 17 x < 5 or x > 5
16. 36 > 1 – 5z > -‐21 -‐7 < z < 4.4
17. 6 b + 3 < 15 or 4b – 2 > 18 b < 2 or b > 5
18. -‐18 > 4x – 3 > -‐15 -‐7 < z < 22/5
19. By how much should a machinist decrease the length of a rod that is 4.78 cm long if the length must be within 0.02 cm of 4.5 cm? 0.26 < x < 0.30
Solving Absolute Value Equations and Inequalities:
20. X = 0 and -‐8/3
21. n = -‐5 and 5
22. K = -‐8 and 8
23. X = -‐1/4 and 1/5
24. X = 5/8 and 11/4
25. X = 3 and -‐2
26. −2 𝑥 − 3 = 18 NO SOLUTION
27. X < 5/6 and x > -‐5/2
28. D > 6 or d < -‐8
29. X > 3 or x < -‐8
30. !!𝑥 − 3 + 2 < 1
𝑵𝑶 𝑺𝑶𝑳𝑼𝑻𝑰𝑶𝑵
31. 3𝑥 − 9 + 2 ≥ 2 All Read Numbers
Function Notation: Let: f(x) = -‐x2 + 1 g(x) = 2x2 + 4x – 8 h(x) = 10 -‐ 3x k(x) = 5x3 – 2x2 + 3x
31. Simplify: g(x) + k(x) 5x3 + 7x – 8
32. Simplify: f(x) – g(x) -‐3x2 -‐ 4x +9
33. Simplify: h(x)·∙ f(x) 3x3 -‐ 10x2 -‐3x +10
34. 3(f(x)) – k(x) -‐5x3 -‐ 1x2 -‐3x +3
35. Evaluate f(-‐5) -‐24
36. Evaluate k(2) 38
37. Find x if h(x) = 0 10/3
38. Evaluate h(k(2)) -‐104
39. Evaluate f(f(3)) -‐63
40. Find x if h(x) = 10 0
41. A car dealer offers a 15% discount off the list price x for any car on the lot. You also have a coupon for $3000 off any discounted price. How much will the car cost if the list price is $22,000?
$15700
42. A store is offering a 10% discount off all items. In addition, employees get a 25% discount. How much would a pair of shoes cost if the original price is $52? $35.10
43. Joe rakes leaves for extra money in the fall. His fee is represented by the following equation: f = 5b + 10, where f is his fee and b is the number of bags of leaves he collects. How much does Joe earn if he collects 8 bags of leaves?
$50
44. Sara is saving money for college. She already saved $1000 and continues to save $168 every month. How long will it take her to save $5000?
23.81 weeks or 24 weeks