I'm pretty sure the answer is c=1.85. I'm sorry if I'm wrong. But I'm pretty sure it's right
AB- 3in.
BC- 5in.
CD- 7.2in.
sorry i don't really have an explanation I just looked at the picture and i guess imagined it in my head? lol sorry but here are the answers I hope that helps at least a little bit :))
Answer:
I think it's A.
Step-by-step explanation:

do a FOIL on it to get the product, or just use the binomial theorem to expand the binomial and simplify