Use the Following Information for Questions

Multiple Choice

Use the following information for questions:
A group of adults aged 20 to 80 were tested to see how far away they could first hear an ambulance coming towards them. An equation describing the relationship between distance (in feet) and age was found to be:
Distance = 600 - 3 * Age.
-How much does the estimated distance change when age is increased by 1?

A) It goes down by 1 foot.
B) It goes down by 3 feet.
C) It goes up by 1 foot.
D) It goes up by 3 feet.