Question #423f5

1 Answer
Jul 16, 2017

-210

Explanation:

Let's break this down

5[color(red)(f(6))]

color(red)(f(x)) = color(red)(-7x)

color(red)(f(6)) = color(red)(-7(6))

color(red)(f(6)) = color(red)(-42)

Now we have 5[color(red)(-42)], which is -210