Answer:
In words, the image assigned to is 18.
Step-by-step explanation:
Givens
- The function varies directly.
- When , .
When a function varies directly, it means that function is linear, and it has a direct proportion between variables, so can be modeled by , where is the constant ratio of change.
So, in this case, the ratio of change is
That means the linear function that represents this situation is
So, if , then
Therefore,