Question

Ceci and Alicia are both participating in a charity bike ride event. riders in the event can choose between a 20-Kilometer route or a 30-kilometer route.Ceci chooses the 30-kilometer route, and Alicia chooses the 20-kilometer route. All riders start at the same time regardless of which route they choose.The equations shown represent Ceci's and Alicia's distances, y, in kilometers, from the finish line as a function of time, x, in minutes, since the ride started.Ceci′s equation: y=−13x+30 Alicia′s equation: y=−15x+20 What is the appropriate domain for the equation representing Alicia's distance from the finish line as a function of time?

(1 point)

0≤y≤20



0≤x≤100



0≤x≤20



0≤y≤100

Answer 1

Solve for when Alicia finishes: set y = −15x + 20 = 0 → x = 20/15 = 4/3 minutes. So the correct domain (time x) is 0 ≤ x ≤ 4/3 minutes.

None of the given answer choices match that. (Choice 0 ≤ y ≤ 20 is the range of the function, not the domain.)