Answer:
29. (2) 12
30. (1) a slope of 3/2 and a y-intercept of -6
31. (1) 12
32. (4) 8%
33. (1) -5
Explanation:
Question 29
- 2x/3 - 5 = x/4
- 2x/3 - x/4 = 5
- (8x - 3x)/12 = 5
- 5x = 60
- x = 12
- (2) 12
Question 30
- 3x - 2y = 12
- 2y = 3x - 12
- y = 3x/2 - 6
- It has a slope of 3/2 and y-intercept of -6
- (1) a slope of 3/2 and a y-intercept of -6
Question 31
- (x - 4)(x + a) = x² - x + w = 0
- a - 4 = -1
- a = 3
- (x - 4)(x + 3) = x² - x - 12 = 0
- w = 12
- (1) 12
Question 32
- Sales tax = $20.51 - $18.99 / $18.99
- Sales tax = $1.52/$18.99
- Sales ≈ 8%
- (4) 8%
Question 33
- C = 5/9 [23 - 32]
- C = 5/9 (-9)
- C = -5
- (1) -5