Stats pre assessments and Module review tests PDF

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answer key to the Stats pre assessments and Module review tests. help to review for final exam. Exam is pretty much the same thing as these tests....

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Module 3 Review Test You should complete the Module Problem Sets with a higher prior to taking this Module Review test. You have a limited number of attempts on this test, so A score of 80% or better is your target for this review te If you score 80% or better, you should review an answered incorrectly prior to moving on to the ne If you score less than 80% on this test, review th answered incorrectly and the course material, pr attempt at the module review test. Note: The score on this module review test is not used average for this course.

Review Tests Review Test 1 Please click on an answer to receive feedback. W completed this review test, you may be guided to tests. 1) Please evaluate the following: If d = 5, then (d + 7)(d - 3) = a) 6 b) 24 Correct. The correct answer is b. (d + 7)(d - 3) = (5 + 7)(5 - 3) = (12)(2) = 24. c) 14 d) 36 2) Which of the following is also equal to x 3?

d) 23 Correct. The correct answer is d. 12 + x ÷ y = 12 + (44 ÷ 4) = 12 + (11) = 23. 4) Evaluate the following: If x = 3, then (27 ÷ x) + (1 · x) = a) 51 b) 17 c) 12 Correct. The correct answer is c. (27 ÷ x) + (1 · x) = (27 ÷ 3) + (1 · 3) = 9 + 3 = d) 33 5) Simplify the following expression: 4a + 8a - 2b + 10 = ? a) 4a - 2b + 10 b) 12a + 12b c) 12a - 2b + 10 Correct. The correct answer is c. If we comb our final equation reads 12a - 2b + 10. Only t can be combined, so 2b and 10 are left unch d) 14ab + 10 6) Simplify the following expression: -3x + 5x - 11 - 4 = ? a) 2x - 15 Correct. The correct answer is a. If we comb our final equation reads 2x - 11. If we combin get 2x, and - 11 - 4 equals -15. b) 9x c) 2x - 11 d) 5x - 11 7) S l

f

y + (5 · 5) = 17 a) - 8 Correct. The correct answer is a. In order to must manipulate the equation so that it's by i of the equation. First, perform the multiplicati of the equation. (5 · 5) = 25, so the equation y + 25 = 17. If we subtract 25 from either side reads y = 17 - 25. So, y = - 8 b) 7 c) 42 d) 8 9) If 6 + b - 2 = 18 What does b equal? a) b = 12 b) b = 14 Correct. The correct answer is b. In order to must manipulate the equation so that it's by i of the equation. First, combine like terms: 6 + b - 2 = 18, both 6 and - 2 are like terms, s combine them. (6 - 2 = 4). So the equation n 4 + b = 18. Now, we can subtract 4 from both sides, so t variable b. (4 - 4) + b = 18 - 4 b = 14 c) b = 26 d) b = 10 10) Solve for x:

4x + 12 = 52

a) x = 16 b) x = - 10 Incorrect. The correct answer is c. In order t

Correct. The correct answer is b. In order to must alter the equation so that it's by itself. T multiplying both sides of the equation by 2 to on the left side. The equation then reads d = d = - 28 c) d = - 12 d) d = 7 12) Solve for a: 3a + 2a - 4 = 41 a) a = 7. 4 Incorrect. The correct answer is d. In order t must alter the equation so that it's by itself. F terms to simplify the equation. The equation 5a - 4 = 41. Then, if we add 4 to both sides, w , or 5a = 45. Finally, divide both sides by 5 to The equation now reads a = 45 ÷ 5, or a = 9. b) a = 45 c) a = - 9 d) a = 9 13) Four times the monthly cost of a cell phone bi $30 set-up charge for internet is $220. Write an eq the cost of the monthly cell phone bill (x). a) 4x + 220 = 30 b) 4x + 30 = 220 Correct. The correct answer is b. $220 is equ monthly cost of the cell phone plus the $30 fo activation. Therefore, the equation is 4x + 30 c) 30x = 220 d) 4x = 220 14) The equation for the revenue of a business is Net Income = Revenue - (Cost of Goods + Wages + E amount of the Wages if the Equipment is $7. 50, C $15. 00, Revenue is $120, and Net Income is $71. )$

10 17a

=

a) b) c)

9 13

90 221 130 133 130 153

Correct. The correct answer is c. After cross solution is 10 17a

=

130 153

. First, set up the equation:

9 13

Then cross multiply: (10 · 13) = (17a · 9) 130 = 153a 130 153

d)

=a

221 90

16) What are the coordinates of point on the grap

1

b) - 3

Incorrect. The correct answer is c. By manip equation so it is written in slope-intercept form y=

1 x 3

2

+ . In slope-intercept form (y = mx + 3

the slope. Therefore m = c)

1 . 3

1 3

d) 3 18) What is the equation of the graph in slope-inte

1

a) y = x 4 Correct. The correct answer is a. The y-inter 0. The rise is 1 and the run is 4 for the graph Therefore, the equation in slope-intercept for 1 4

b) y = - x

Subtract 3x from both sides of the inequality. 3 + (2x - 3x) < (3x - 3x) - 3, which equals 3 - x Subtract 3 from both sides of the inequality. (3 - 3) - x < (- 3 - 3), which equals - x < - 6. Divide both sides of the inequality by - 1. - x ÷ - 1 < - 6 ÷ - 1, which equals x > 6.

20) Choose the graph that represents the followin 2...