Write the expression 21a^3c^8/7a^5c^3

Classify each polynomial by its degree and by its number of terms.

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $32.09. find the probability that a randomly selected bill will have an amount greater than $155, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?

Find the value of x. give reasons to justify your solutions! l, m ∈ kn