If f(x) = 1/2 x^2 - 3, find f(6).
3
15
21
69

  15

Step-by-step explanation:

Put 6 where x is and do the arithmetic.

  f(6) = 1/2·6² -3 = 1/2·36 -3

  = 18 -3 = 15

x < -3 1/2 or 3.5

Step-by-step explanation:

-9x + 5 < 17

13x +25 < -1

If we add the 2 equations together, we will have

4x + 30 < 16

4x < 16 - 30

4x < -14

Divide both sides by 4

x< -14/4

x < -3 1/2 or 3.5