Answer:9z - 63 = 0
what does z = ?
9 x 7 = 63 - 63 = 0
z = 7
Step-by-step explanation:hope this helps :)
To find f(-20), first figure out which piece x = -20 fits with.
Since -20 < -12, x = -20 first in the domain used by the third piece.
For f(-20), treat this function as if it was just f(x) = 3x-7.
f(-20) = 3(-20) -7
= -60 - 7
= -67
I think you use
xamount(1-.8)
.8 being 80% as a decimal.
1 being 100%
so .2 or 20% remaining multiplied by whatever amount.
carbon and it has 4 valence electrons
