jasminea939 jasminea939
  • 28-09-2020
  • Mathematics
contestada

g(a)=2a+4
f(a)=a-4
find (g-f)(-7)

Respuesta :

jimrgrant1 jimrgrant1
  • 28-09-2020

Answer:

1

Step-by-step explanation:

note (g - f )(a) = g(a) - f(a)

g(a) - f(a)

= 2a + 4 - (a - 4)

= 2a + 4 - a + 4

= a + 8

Thus

(g - f)(- 7) = - 7 + 8 = 1

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