Jessica has a bubble tea card worth $200. After she bought the first bubble tea, the card’s value is $196.5. After she bought the second bubble tea, its value is $193. After she bought the third bubble tea, the card is worth $189.5. Assuming the pattern continues and that all bubble teas cost the same , a) Write an equation to define A(n), the amount of money on the card after n bubble teas purchased.
b)Jessica buys a bubble tea every Friday after school. How many weeks in a row can she afford to buy a bubble tea, using her card only?
C) explain how you arrived at your answer in part b

Solve with a graph please

step-by-step explanation: s

answer: the proof is mentioned below.

step-by-step explanation:

since, given:   lines bc = ef

prove:   lines ac > ef

          statements                                           reason

1. bc=ef                                           1. given

2. ac= ab+bc                                 2. because b is the point between the  

                                                            line segment ac

3.   ac > bc                                       3. because if a line segment is equal to

                                                          the sum of two line segments then it is

                                                          always greater then each of these

                                                          individual line segments

4. ac > ef                                         4. by equality property.