I'm sorry i'd like to help, but i'm rlly bad at it too. I just finished that module and i still don't get it....
Answer:
69 feet
Step-by-step explanation:
3 seconds is a unit of time, t. So if we want the height of the ball, h, 3 seconds after it was kicked, we plug in 3 for t and solve for h:
which simplifies to
h = 3 + 210 - 144 so
h = 69 feet
The answer is 72
hope this works
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