Question

Hi can someone help me here​

Answer 1

5 and
`(15)/(a-3)`

Explanation:

given

f(x) =
`(15)/(x-3)`

f(6) means what is the value of f(x) when x = 6

substitute x = 6 into f(x)

f(6) =
`(15)/(6-3)` =
`(15)/(3)` = 5

f(a) means what is the value of f(x) when x = a

substitute x = a into f(x)

f(a) =
`(15)/(a-3)`

Answer 2

Explanation:

`\displaystyle\\F(6)\ \ \ \ (15)/(x-3) \\\\(15)/(6-3)= \\\\(15)/(3)= \\\\5\\\\F(a)\ \ \ \ \ (15)/(x-3) \\\\F(a)=(15)/(a-3)`