Answer: [tex]f(15)=-8[/tex]
Step-by-step explanation:
The given function : [tex]f(x)-x+7[/tex]
To find [tex]f(15)[/tex] , we need to substitute the value of x=15 in the given function ,so that we have
[tex]f(15)=-15+7\\\\\Rightarrow\ f(15)=-8[/tex]
Therefore the value of the given function [tex]f(x)-x+7[/tex]
at [tex]x=15 \text{ is}-8[/tex] i.e. [tex]f(15)=-8[/tex]
