SOLUTION: If f(x)=(x-5A)/(-5x+1) and f(-5)=-15, what is the value of A?

Algebra ->  Matrices-and-determiminant -> SOLUTION: If f(x)=(x-5A)/(-5x+1) and f(-5)=-15, what is the value of A?      Log On


   

Question 964422: If f(x)=(x-5A)/(-5x+1) and f(-5)=-15, what is the value of A?
Answer by macston(5194) About Me  (Show Source):
You can put this solution on YOUR website!
-15=((-5)-5A)/(-5(-5)+1)
-15=(-5)-5A/26
-390=(-5)-5A
-385=-5A
77=A
ANSWER: The value of A is 77.