A graph shows the speed of two cars over time. Car X increases speed linearly from 0 to 60 mph in 60 seconds. Car Y accelerates quadratically (y = 0.5x²). What is Car Y’s speed at 60 seconds?
Correct: B
Plug x = 60 into the equation: y = 0.5(60)² = 0.5(3600) = 1,800 mph. This shows understanding quadratic models versus linear ones.