Question

If f(x) = |x + 7|, find f(–12).



A.
19


B.
5


C.


–19


D.


–5

Answer 1

erase the x in your equation and put in -12
simplify (do the arithmetic)
what do you get ?

Answer 2

-5?

Answer 3

you get
| -5 |
but the vertical bars mean if the number inside is negative, make it positive
in other words
| -5 | = 5

also, notice |5|= 5
so the | | changes numbers to always be positive.

Answer 4

Oh okay thank you i get it now