3 because the next number to the right is a 0 and will not be rounded up.
7x+40... If you go to mathwarehouse.com you can type your question in and you'll get an answer in less than a second
θ\ 6 degrees
\
\ so the θ= 180-90-6 =84 degrees so we need to find x
20m \ tan (84)=x/20
____ \ x=20 tan(84)
x x=190.287
Rewrite in standard form and use the form to find the vertex.
(1, 5)
(x - 1)^2 + 5