devonmurhy05 devonmurhy05
  • 09-01-2020
  • Mathematics
contestada

f(x) = -2x + 9, find x if f(x) = 23

Respuesta :

MinYoona
MinYoona MinYoona
  • 11-01-2020

Answer:

x = -7

Step-by-step explanation:

f(x) = -2x + 9

f(x) = 23

therefore, f(x) =

-2x + 9 = 23

     -2x = 23 - 9

     -2x = 14

       -x = 14 ÷ 2

       -x = 7

        x = -7

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