Final answer:
To find the height of the ball at t=3 seconds, plug 3 into the quadratic equation h = -16t^2 + 60t + 6, which calculates to a height of 42 feet.
Step-by-step explanation:
The question asks for the height of a ball at a specific time given a quadratic equation that represents its vertical motion. To find the height of the ball at t=3 seconds, we simply substitute 3 for t in the equation h = -16t2 + 60t + 6:
h(3) = -16(3)2 + 60(3) + 6
h(3) = -16(9) + 180 + 6
h(3) = -144 + 180 + 6
h(3) = 42 feet
So the height of the ball at t=3 seconds is 42 feet.