Use the following piece-wise function to find f(2)

Question

f(x)= { 2x-5, x≥4 }
{1/2x+1, x<4 }

A. -1
B. 2
C. 3
D. 4

please help

Answer 1

well, 2 < 4, so
f(2) = 1/2 * 2 + 1 = 2