Please help!! Classify the polynomial based on the degree and amount of terms: 4a^3- 8a^2+6a

Group of answer choices:
a. quintic trinomial

b. cubic trinomial

c. cubic polynomial

Fanny mendelssohn manages all the magazines and paperback books at a local grocery store. she prices many paperbacks to sell at $7.99. the cost to the store is $5.29. what is the markup rate on a paperback book, based on its cost?

Me find the value of x each figure.

Asap! i'm not good math and i'm lost.