At a contest, every correct answer earns you 5 points and every incorrect answer will deduct 3 points. jessica has a score of 66. if she answered 3 questions incorrectly, how many correct answers did she have?

Solve the equation 3x2 + 19x + 9 = 0 to the nearest tenth.

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?

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)