SOLUTION: f(x)=5x-4 f(4a)=80 what is a equal to?

Question 911454: f(x)=5x-4
f(4a)=80
what is a equal to?
Answer by MathLover1(20849) (Show Source): You can put this solution on YOUR website!

=> means
...solve for

check:

check that => => =>

RELATED QUESTIONS
f(x)= 4-5x, x (answered by midwood_trail)
Given f(x)=x to the second power+2 find f(a=2)-f(a) a. 4a+4 b. 4a+8 c. 2 d.... (answered by user_dude2008)
if f(x)=5x-7, then what is the solution to f(x)=4? (answered by math_helper)
Let f(x) = 5x + 4. Find f(x) - f(a) / x-a, if x does not equal... (answered by math-vortex)
f(x) = 5x/4 + 2/3 What is f(a) if f(a+3)= 5? Please help me (answered by rothauserc)
What is f(�4) equal to? f(b) = 5 � 8b f(�4) =... (answered by Fombitz)
I cant find these again.....I am stuck...Can someone help me Here is the problems and I... (answered by solver91311)
7.) Solve 0.5x + 4 is less than and equal to 1.3 - 3 The solution is {x l x ____... (answered by oscargut)
f(x)=-5x+4 (answered by Alan3354)