$$9.25\times 0.8+9\frac{1}{4}\times 0.2=$$． 
Overseas Competition->Knowledge Point->Calculation Modules
$$9.25\times 0.8+9\frac{1}{4}\times 0.2$$  $$=9.25\times 0.8+9.25\times 0.2$$  $$=9.25\times (0.8+0.2)$$  $$=9.25\times 1$$  $$=9.25$$  So, $$\text{A}$$. 