Please solve this a+7=2

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?

The complement of an angle is one-sixth the measure of the supplement of the angle. what is the measure of the complement angle?

Trying to figure out the standard form equation for this graph