Question 1072617

I need your help in this function question : Determine a meaningful domain for the function in the question : A ball is dropped from a 144 f building. Its height in feet at a time t( in seconds) after being dropped is s(t) = -16tē =144.  
<pre>First off, there are too many equals signs.
More than likely, it's {{{s(t) = - 16t^2 + 144}}}
Meaningful domain, or: {{{highlight_green(0 <= t <= 3))}}}