find f(-7).
f(x) = |x - 3| +10
we know that
f(-7). is the value of the function f(x) when the value of x=-7
so
For x=-7
substitute in the function
f(-7) = |-7 - 3| +10
f(-7) = |-10| +10
f(-7) = 10 +10
f(-7) =20
therefore
the answer is
f(-7) =20