How to solve 7*8=_*_+_*_

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 is the slope of a line that is perpendicular to y = 3x + 1

What signals you that factoring by grouping is the best method to use when factoring a problem?