What is the value of x in the following proportion? 7/x-5 = 15/x+4

What is the point-slope form of the equation for the line with a slope of -2 that passes through (1,4)?

The equation respenting the left table is

Abag contains 3 red marbles, 2 blue marbles, and 2 green marbles. one marble is picked, then another marble. assume that the selections are made with replacement. a) find the probability of picking two red marbles with replacement. b) find the probability of picking a red marble and a blue marble. assume the selections are made without replacement. c) find the probability of picking two red marbles without replacement. d) find the probability of picking a red marble and a blue marble without replacement.