HELP PLZ doesn’t have to be all of them ASAP thanks :)

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?

What situation is an example of an observational study

Which expression is equivalent to 8(k + m) − 15(2k + 5m)?