ANSWER
[tex]f(30) = - 1[/tex]
EXPLANATION
The given expression is
f(x)=14-0.5x
We want to finfmd f(30).
We substitute x=30 into the expression to obtain:
[tex]f(30)=14-0.5(30)[/tex]
Multiply out the last term to obtain,
[tex]f(30)=14-15[/tex]
Simplify to get,
[tex]f(30)= - 1[/tex]
