ANSWER
g(3)=-2
EXPLANATION
The given function is
[tex]g(r) = - 5r + 13[/tex]
We want to find g(3).
We substitute r=3 into the given function to obtain:
[tex]g(3) = - 5 \times 3 + 13[/tex]
Multiply out the first term
[tex]g(3) = - 15 + 13[/tex]
Simplify the result to obtain:
[tex]g(3) = -2[/tex]
