Julio sold half of his comic books and then bought 14 more. he now has 28. with how many did he begin?

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?

Which expression is equivalent to sq-80

Acircle has a circumference of 7.850 units. what is its radius?