a cartoonist uses the function below to calculate the net profit he earns from sellings his drawings.In the function, d represents the number of drawings he sells. N(d)= 30(d)-$500...what is domain of N(d)?

Question

is the answer all non negative real numbers?

Answer 1

He can't have a negative number of drawings. So, d >= 0.

In fact, the domain is all integers >= 0, since there are no partial drawings.