SOLUTION: given f(x)+5x=9, find: a.) f(-2) b.) f(B+4)

Algebra ->  College  -> Linear Algebra -> SOLUTION: given f(x)+5x=9, find: a.) f(-2) b.) f(B+4)      Log On


   

Question 314395: given f(x)+5x=9, find:
a.) f(-2)
b.) f(B+4)
Answer by Jstrasner(112) About Me  (Show Source):
You can put this solution on YOUR website!
If f(x)+5x=9, then f(x)=9-5x
Therefore:
a) f(-2)= 9-5(-2)=9-(-10)=9+10=19
b) f(B+4)=9-5(B+4)=9-5B-5(4)= 9-5B-20=-11-5B
I hope this helps!