The correct answer is b. The domain of the function is in terms of x, so we are looking at the x-axis. The line stretches from 3 to 7 on the x-axis, so we know that b is our answer.
Answer:
b
Step-by-step explanation:
The answer is D. The bus picked up people, and the graph is saying it dropped people off.
Here it is. You can also use the quadratic equation to find the answer.