8. Find ab - c if a = 5, b = -12, and c = 60. 9. Find c-b+ 2(a - 4) if a = 3, b = -7, and c = -10.
10. Find the mean of -4, 11, -5, 7, -12, 14, -7,-11, -2.

8.) -120

9.) -5

10.) -1

Step-by-step explanation:

8.)  ab - c

     5(-12) - 60

     -60 - 60 = -120

9.)   -10 - (-7) + 2 (3 - 4)

      -3 + 2(-1)

      -3 + (-2) = -5

10.) Add all the numbers up then divide by how many numbers there are.

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step-by-step explanation: