Question

f(5) = -2(x + 5)f(5)=

Answer 1

Given the function

$f(x)=-2(x+5)$

You need to calculate f(5), this is, to calculate the value of the function when x=5

First step is to solve the multiplication, for this you have to apply the distributive property of multiplications:

$\begin{gathered} f(x)=(-2)\cdot x+(-2)\cdot5 \\ f(x)=-2x-10 \end{gathered}$

Next replace x=5 in the function

$\begin{gathered} f(5)=(-2\cdot5)-10 \\ f(5)=-10-10 \\ f(5)=0 \end{gathered}$