lazorgun lazorgun
  • 23-07-2019
  • Mathematics
contestada

Let f(x) = -2x - 7 and g(x) = -4x + 6. Find (fxg)(-5).

a. -59
b. 3
c. 26
d. -6

Respuesta :

kudzordzifrancis
kudzordzifrancis kudzordzifrancis
  • 23-07-2019

Answer:

78

Step-by-step explanation:

The given functions are:

[tex]f(x) = - 2x - 7[/tex]

and

[tex]g(x) = - 4x + 6[/tex]

[tex](f \times g)(x) = f(x) \times g(x)[/tex]

[tex](f \times g)(x) = ( - 2x - 7)( - 4x + 6)[/tex]

When we plug in x=-5, we get:

[tex](f \times g)( - 5) = ( - 4 \times - 5 + 6)( - 2 \times - 5 - 7)[/tex]

[tex](f \times g)( - 5) = ( 20 + 6)( 10 - 7)[/tex]

[tex](f \times g)(5) = ( 26)( 3) =7 8[/tex]

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