Round 258,177 to the nearest hundreds thousand

100 points, hi, i’m not sure how to get the equation from the graph and table.

The number if marbles of different colors stored in a hat is listed below: 4 red marbles 10 green marbles 7 blue marbles. without looking in the hat, dan takes out a marble at random. he replaces the marble and then takes out another marble from the hat. what is the probability that dan takes out a blue marble in both draws?

Could someone with number 1 and 2