Question

( will give brainlyest)

Answer 1

Answer: 384 feet

Step-by-step explanation:

     We will simplify and solve -16t² + 160t when t is equal to 4.

-16t² + 160t

-16(4)² + 160(4)

384 feet

Answer 2

Answer:

Step-by-step explanation:

**Note: The polynomial in question is -16t² + 160t, as clarified in the discussion under the question.**

Since there is a polynomial to find the height given a certain time, the height is a function of time.

This function would be h(t) = -16t² + 160t, so plugging in 4 for t would give the height.

$h(4) = -16(4)^2+160(4)$

$-16(16)+160(4)$ [Squaring 4]

$-256 + 640$ [Multiplying]

$384$ [Combining both terms]

Hence, the height of the firework after 4 seconds is 384 feet.