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19-04-2017
Mathematics

contestada

If f(x) = 6 – 5x and g(x) = 4x – 1, evaluate f(x) – g(x) for x = –2.
A. –11
B. 7
C. 9
D. 25

Respuesta :

ghanami ghanami

19-04-2017

hello :
f(x) = 6 – 5x and g(x) = 4x – 1
f(x)-g(x) = 6-5x-(4x-1) = 6-5x-4x+1 = -9x+7
whene x = - 2
f(x)-g(x) = -9(-2)+7 = 25......(answer : D)

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