Question 9 Jill has a coin collection. She currently has 40 coins and will add 2 new coins to her collection each month. She models this situation with the linear function C(m) = 40 + 2m where is the number of coins in her collection and m
is the number of months that have passed
Which statement best describes the appropriateness of her model?
The model is not appropriate since the two variables are related exponentially
А
The model is not appropriate since the domain of the function must be integral values.
C
The model is appropriate since there is a constant rate of change between the two variables.
D
The model is appropriate since there is a constant percent rate of change between the two variables