345973 rounded to the nearest hundred is 346000
2b^2 + 81/2 b + 4
basically 2b^2 + 16b + 49/2 b + 4
= (2b^2) + 16b+49/2b) + (4)
= 2b^2 + 81/2 b + 4
630 sterling * 1 euro / 0.84 sterling
630 sterling divided by 0.84 sterling = 750 euros
Let x be the original amount as per the ques tion (7/6) x= 420thus x=420*6/7=360thus the interest earned is 420 -360=60
