Well if you divided 42 by 2 you get 21 so you could then have blue beads and 21 red beads on the necklace.
Step-by-step explanation:
domain is all real positive numbers. x> 0
range is y>= -1
I believe what your asking is just multiplying it together so 5p(p-3) would be 5p2-15p. the p2 is p squared or a little 2 on top of the p. Hope I helped!