What is the area of a triangle with vertices at (3,7),(7,5), and (7,11)

Adaylily farm sells a portion of their daylilies and allows a portion to grow and divide. the recursive formula an=1.5(an-1)-100 represents the number of daylilies, a, after n years. after the fifth year, the farmers estimate they have 2225 daylilies. how many daylilies were on the farm after the first year?

Based on the figures as marked, /\rqs = —

Ineed with number 6 , explain how to get 1978