Step 1:
Write the function:
[tex]h(t)=-16t^2\text{ + 380}[/tex]Step 2:
To find the height after 1 second, you will substitute t = 1
[tex]\begin{gathered} h(t)=-16t^2\text{ + 380} \\ h(1)\text{ = -16 }\times1^2\text{ + 380} \\ h(1)\text{ = -16 + 380} \\ h(1)\text{ = 364 foot} \end{gathered}[/tex]Final answer
364