Respuesta :

Answer:

   46. (3) 29

   47. (1) y = -4x + 3

   48. (3) 3

   49. (3) -1/2

   50. (4) 25x - 75

Step-by-step explanation:

Question 46

  • Let red marbles be 2x + 3 and black marbles be x
  • 2x + 3 + x = 42
  • 3x = 39
  • x = 13
  • No. of red = 2(13) + 3 = 29 marbles
  • (3) 29

Question 47

  • Parallel to a line means the slope is the same
  • (1) y = -4x + 3

Question 48

  • For the expression to be undefined, the denominator has to be 0
  • x - 3 = 0
  • x = 3
  • (3) 3

Question 49

  • Slope = -4 - 1 / 4 + 6
  • Slope = -5/10
  • Slope = -1/2
  • (3) -1/2

Question 50

  • Total = 25x
  • Left 3 boxes at home = -3x = -3(25) = -75
  • (4) 25x - 75

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