Question

F(n)=1.75n+4=25. 25 is the __th term.

Answer 1

$1.75n+4=25\ \ \ \ |-4\\\\1.75n=21\ \ \ \ |:1.75\\\\n=\dfrac{21}{1.75}\\\\\boxed{n=12}\\\\Answer:\ \text{25 is the 12th term}$