Online Self-Tests(E17)

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  1. If x+ 7 = –7, find the value of 3 + (x+ 7).

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  (1 point)

  
  

  Answer:

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  2. Evaluate the expression below if x× (–3) = 39.

  (2 × x) – 6

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  (1 point)

  
  

  Answer:

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  3. Evaluate the expression below if x= –14 and y= –6.

  x – y

  2

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  (1 point)

  
  

  Answer:

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  4. Evaluate the expression below if x= –30 and y= –9.

  2x

  +

  3y

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  (1 point)

  
  

  Answer:

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  5. Evaluate the expression below if x= 30 and y= –6.

  x÷ y

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  (1 point)

  
  

  Answer:

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  6. If x× 10 = –5 and y= 0.9, find the value of x– y.

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  (1 point)

  
  

  Answer:

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