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At the trampoline park, Lisa bounces upward with an initial velocity of $24$ feet per second. Therefore, Lisa's height above the trampoline in feet, $t$ seconds after she jumps, can be modeled by the expression $-16t^2 + 24t$. This expression can be written in factored form as $-16t(t - 1.5)$. $\newline$What does the number $1.5$ represent in the expression? $\newline$(A)the time in seconds from when Lisa jumps until she lands on the trampoline $\newline$(B)Lisa's height above the trampoline at the start of her bounce $\newline$(C)the time in seconds from when Lisa jumps until she reaches the top of her bounce $\newline$(D)Lisa's height above the trampoline when she reaches the top of her bounce