Question

Raul is selling coupon books. He started with 50 coupon books and has already won a prize for selling at least 10 coupon books. The total amount of money Raul will make from selling x coupon books is represented by a function.



f(x)=20x



What is the practical domain of the function if Raul sells 50 coupon books?

All integers from 10 to 50, inclusive

All multiples of 20 between 0 and 1000, inclusive

All integers from 0 to 50, inclusive

All real numbers

Answer 1

I think my answer is C.

Answer 2

@triciaal