SOLUTION: Let f(x) = -x - 5 and g(x) = 2x + 3. Find the indicated value. g(0) Help with this equation would be appreciated.

Algebra ->  Equations -> SOLUTION: Let f(x) = -x - 5 and g(x) = 2x + 3. Find the indicated value. g(0) Help with this equation would be appreciated.      Log On


   



Question 128692: Let f(x) = -x - 5 and g(x) = 2x + 3. Find the indicated value.
g(0)
Help with this equation would be appreciated.

Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


Discussion



The following discussion and solution provided for an earlier submission
should give you enough information to solve this one yourself.


A few words about function notation. If f is a function, then f(x) is the
value of the function at x, usually denoted by some sort of rule for finding
the value of the function given that you know the value of x. f(a) would be
the value of the function at a, and f(4) would be the value of the function at,
yep, you guessed it, 4.





Solution



In this case the value of the function f at x, or f(x) is given by the rule:
f%28x%29=-x-5. You want to know f(4), which is the value of the function at
4, so f%284%29=-%284%29-5=-9