The pizza that costs $18 will be shared among a group of friends. Each friend contributes the same amount of money to pay for the pizza.

Question

a. Write a function, C (x), that can be used to calculate the total amount of money that each friend will contribute if x number of friends split the pizza.

b. As x increases, what happens to the value of C (x)?

c. What is the domain of C (x)? What is the range of C (x)? Explain

Answer 1

a. C(x) = 18/x

b. as more people contribute each persons contribution lessens.

c. the domain is all natural numbers - but who wants to share pizza with 587 people?

   the range is {C(x) | 0 < C(x) ≤ 18}  No matter how many people contribute each contribution is more than  0. The biggest contribution would be $18 from one person.