What is 257,098 rounded to the nearest hundred thousand

What is the value with a place of tenths in 907.456 1) 0 2) 6 3) 4 4) 5

At $1.32 million, they closed last month percent above what they paid in 2007." how much did they pay in 2007?

When solving this problem: 3025/5.5 = a/90.75 you get 49912.5 which would be the length of one of the sides of a square when the area is only 90.75 inches. is that answer correct, why, and how is it possible?