I had a bad pre-algebra teacher in 7th grade, and she just talked on while making us write down notes that we wouldn't remember while trying to listen to her, and I didn't understand it when I looked at the section on NCVPS, or when my Algebra 1 teacher went over it in class.

f(x) = -2x + 5, and g(x) = x^2 - 4x + 1. Find the given Values.

1. f(1/2)

2. g(-2)

Please solve, and explain. Thank you for your time.