If you get this right i’ll give the brainliest answer

Which of the following graphs could represent a quartic function?

Ithink i know it but i want to be sure so can you me out ?

The perimeter of ? cde is 55 cm. a rhombus dmfn is inscribed in this triangle so that vertices m, f, and n lie on the sides cd , ce , and de respectively. find cd and de if cf=8 cm and ef=12 cm. the answer is not cd=20 and de=15. i have tried that one, it does not work.