Could you explain to me how to these type of problems? I checked in my book and it is still confusing.

Question

Evalute the piecewise function at the given value of the independent variable.

1. g(x)= {x^2+2 if x cannont equal 2, x+8 if x=2

Determine g(-5).

2. f(x) {-5x+4 if x <-3, 2x+3 if x > or equal to -3

Determine f(-7)

Answer 1

If x is -5, it is not two. g(x)=27