The correct interpretation of the y-intercept of the function \( y = -16t^2 + 30t + 2 \) is:
The y-intercept is at (0, 2). The shirts are launched at an initial height of 2 feet.
This is because at \( t = 0 \) (the time of launch), the equation simplifies to \( y = 2 \), indicating that the T-shirts are indeed launched from a height of 2 feet.