10(4x-1) is the answer to your question my friend
Answer:
10(4x - 1)
Step-by-step explanation:
40x - 10
(1,3) (2,6) (3,9) (4,12)
Meanwhile the x value increases by 1, the y value increases by 3.
First I'll make the assumption that you mean
4x+5
f(x) = ------------
x+4
and then set this function = to 25/9:
4x+5 25
f(x) = ------------ = ------
x+4 9
Solve for x: Cross-multiplying, we get 36x + 45 = 25x + 100.
Consolidating like terms, we get 11x = 55. Thus, x = 5.
x=10
