What is the ratio of the area of abc to the area of abd? me

What is the equation of the graph below? y=sec(x)-4

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.

What is the missing reason in the proof? segment addition congruent segments theorem transitive property of equality subtraction property of equality?