SOLUTION: Hello-Please help! I am just not grasping the concept of functions. Find the requested value. f(3) for f(x)={3x+1, if x<1 3x, if 3 (less than or equal to sign)

Algebra ->  Functions -> SOLUTION: Hello-Please help! I am just not grasping the concept of functions. Find the requested value. f(3) for f(x)={3x+1, if x<1 3x, if 3 (less than or equal to sign)      Log On


   

Question 134221: Hello-Please help!
I am just not grasping the concept of functions.
Find the requested value.
f(3) for f(x)={3x+1, if x<1
3x, if 3 (less than or equal to sign)x (less than or equal to
sign) 8
3-5x, if x>8
Everything after the equals sign is enclosed by one bracket. THANK YOU very much!
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
Remember, f(3) is asking "what is the value of f(x) (or y) when x=3?"


Notice how the only inequality that has the value x=3 in the interval is the second equation 3x since the inequality is 3%3C=x%3C=8


So simply plug in x=3 into 3x

3%283%29=9


So f%283%29=9