Hi there.
To find the value of f(-5), we need to substitute x = -5 in the equation.
[tex]f( - 5 ) = 4(3 - ( - 5))[/tex]
Now then, know the basic rules of multiplying in the negative.
When you multiply the negative with the negative, you will get the positive.
Thus, - (-5) = 5
[tex]f( - 5) = 4(3 + 5) \\ f( - 5) = 4(8)[/tex]
Then distribute 4 inside.
[tex]f( - 5) = 32[/tex]
Therefore, the answer is f(-5) = 32
