SOLUTION: I don't know what I'm supposed to do. Here is the question: Evalute the following for f(x)= {3x-5, x>4 {x squared, x<=4 a) f(7) b) f(4) c) f(

Algebra ->  Functions -> SOLUTION: I don't know what I'm supposed to do. Here is the question: Evalute the following for f(x)= {3x-5, x>4 {x squared, x<=4 a) f(7) b) f(4) c) f(      Log On


   



Question 721499: I don't know what I'm supposed to do. Here is the question:
Evalute the following for f(x)= {3x-5, x>4
{x squared, x<=4
a) f(7) b) f(4) c) f(-3)

Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
You are supposed to pick the appropriate branch of the function depending on the value of x asked for, and evaluate the function.

a) f(7)
You use the function branch correpsonding to x%3E4.

b) f(4)
Use the branch corresponding to x%3E4.

c) f(-3)
Obviously, this is for x%3C=4, so pick the corresponding function branch.