Answer:

Step-by-step explanation:
simplified is 
4 Bacteria double per hour to give 8 bacteria then in 8 hours it will become 64 then this 64 doubles to give us 128
Answer:
0.109375
Step-by-step explanation:
7/8 divided by 8 will be 0.109375
D.) "The graphs of the equations intersect each other at two places."
Discriminant = b^2 - 4ac
a = 4
b = 16
c = 16
16^2 - 4(4 x 16)
256 - (4x64)
256 - 256 = 0
Therefore it only has one root