Write the fraction as a sum or difference 7-6× % 2

Anyone know? will mark brainliest if correct

Bradley hikes 12 miles in 3 hours. in relation to bradley’s hike, which statement describes the expression

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?