Question

How do you evaluate the function `f(x)=absx+10` for f(-4)?

Answer 1

`f(-4)=14`

Explanation:

`"substitute x = - 4 into f(x)"`

`"note "|4|=4" and "|-4|=4`

`rArrf(color(red)(-4))=|color(red)(-4)|+10`

`color(white)(rArrf(-4))=4+10`

`color(white)(rArrf(-4))=14`