Convert y+2=-3(x-7) to standard form

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?

How many zeros does the function f(x)=4x3-x2+1 have

Is this a polynomial function? i need to know asap