Answer:
The function is "f(x) = 5*x"
Step-by-step explanation:
Everytime we add a number to the independent variable of a function, in this case x, there'll be a common factor between the variable and a pure number. To solve this problem we need to make "(x + 3)" appear. Since we have "f(x+3)" we need to first factor the common denominator. We have:
f(x + 3) = 5*(x + 3)
Therefore,
f(x) = 5*x
