D and E. If I remember right that should be the answer.
Hello!
All you have to is isolate the X variable :)
X + 25 = 45
X = 45 - 25
X = 20
I hope this helps :))
F(x)=5x
normal domain: all real numbers
practical domain: <span>all positive integers
</span>becasue we can substituent with any positive integer in the place of x
Your diagram doesn't clearly define what values correspond to what, can you explain.
