Answer:
11
Step-by-step explanation:
F(x) = 2x+3 is just a function, so if you replace one of the "x" with 4 you have to replace the other one so it just becomes
F(4) = 2(4) + 3 then you do 2(4) = 8 then add 3 to it and it gets you 11.
hope this helps
