Introduction to functions

Question

Ben has a total of ten $2.4-stamps and $3-stamps. Let n be the number of $2.4-stamps and $F be the total face value of the stamps. It is given that F is a function of n.

(a) Represent the function by using the algebraic method.

(b)Find the domain of the function.

Answer 1

n+y=10

2.4n +3y = F

2.4n +2.4y = 24

.6y= F-24

F= .6y+24

or

F(n)=84-.6n

24<F<84