If \( x^{2} - 4x + 1 = 0 \), what is the value of \( x^{2} + \frac{1}{x^2} \)?
18
16
14
15
C. 14
The value of \( \frac{2}{5} \) × 350 + 30% of 250 is:
125
215
225
115
B. 215