Check the picture below.
so if we just find its vertex, we know how many feet it went up by its y-coordinate.
![\bf h=64t-32t^2\implies h=-32t^2+64t+0 \\\\[-0.35em] ~\dotfill](https://tex.z-dn.net/?f=%5Cbf%20h%3D64t-32t%5E2%5Cimplies%20h%3D-32t%5E2%2B64t%2B0%20%5C%5C%5C%5C%5B-0.35em%5D%20~%5Cdotfill)

20,484,163 in expanded form
2 ten million and 0 one million and 4 hundred thousand and 8 ten thousand and 4 one thousand and 1 hundreds and 6 tens and 3 ones.
or
2 x 10,000,000 + 0 x 1,000,000 + 4 x 100,000 + 8 x 10,000 + 4 x 1,000 + 1 x 100 + 6 x 10 + 3 x 1
60
,
76
lmk if you need anything else
Is there any guide or institutions on how to do it?
Answer:
x = -7/11, y = -14/11
Step-by-step explanation:
2x = y ------- (1)
7y = -7+3x -------- (2)
from (1)
2x = y
y = 2x ------- (3)
substitute (3) into (2)
7y = -7+3x
7(2x) = -7+3x
14x = -7+3x
14x-3x = -7
11x = -7
x = -7/11
substitute x = -7/11 into (3)
y = 2x
y = 2(-7/11)
y = -14/11
x = -7/11, y = -14/11