Answer:
j = 6
Step-by-step explanation:
"Is" typically means equals. "More than" means it is added to.
So 15 equals j with 9 added to it.
15 = 9 + j
Now solve for j by subtracting 9 from both sides.
15 - 9 = j
j = 6
80=20x4=10x2x2x2=5x2x2x2x2
5x2x2x2x2
False.
Mixed numbers are a combination of whole numbers and fractions, not decimals.
Let

represent the number of bacteria after

hours.
so

is the number of bacteria after 0/2 = 0 hours

is the number of bacteria after 1/2 hours

is the number of bacteria after 2/2 = 1 hours and so on
so if we list a few terms of this sequence, we have:





so clearly,

, the number of bacteria after

hours, is equal to

.

is the number of bacteria after

hours.
Thus, we calculate

, which is

.
Answer: the number of bacteria after 24 hours is

.