Question

If f(x) = -x+7, what is f(15)? (I got -8, which was incorrect) Thanks!

Answer 1

im not sure why you said ur wrong b/c i got the same answer
f(x) = -15+ 7
f(x) = -8

Answer 2

Answer:
`f(15)=-8`

Explanation:

The given function :
`f(x)-x+7`

To find
`f(15)` , we need to substitute the value of x=15 in the given function ,so that we have

`f(15)=-15+7\\\\\Rightarrow\ f(15)=-8`

Therefore the value of the given function
`f(x)-x+7`

at
`x=15 \text{ is}-8` i.e.
`f(15)=-8`