At a job fair, AB two companies set their own salary standards:

(1) Company A:1500+(n-1) * 230; Company B: 2000 * [(n- 1+5%) to the power of (n-1)].

(2) Company A:1500+(10-1) * 230 = 3570 yuan; Company B: 2000 * [( 10- 1) to the power of (1%) ]=3 102.66 yuan. So we should choose company a.

(3)2000- 1500=500 yuan. Because the monthly salary growth rate of Company B is greater than that of Company A, their salary gap is gradually narrowing until Company B is greater than Company A. ..