Question

question given $f(x)=-x + 5$, solve for $x$ when $f(x)=-10$.

Explanation:

Step1: Substitute f(x) value

Set $-x + 5=-10$.

Step2: Isolate -x

Subtract 5 from both sides: $-x=-10 - 5$.
So, $-x=-15$.

Step3: Solve for x

Multiply both sides by - 1: $x = 15$.

Answer:

$15$