6. if f(x) = –8 – 5x, what is f(–4)? f(–4) = 12 f(–4) = –28 f(–4) = –12 f(–4) = 28

For this case we have a function of the form:

where:

We want to know the value of the function when that is,

Substituting we have:

We have by law of multilplication of signs that:

Different signs are subtracted and the sign of the major is placed.

Option A

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answer: x=60