Answer:

Step-by-step explanation:
Given
--- Initial Amount
every 10 years
Required
The remaining amount after 300 years
To do this, we make use of:

Where
r = decay rate
T = the period of decay
In 300 years, there are 30 periods of 10 years.
i.e.






Answer:
2.5
Step-by-step explanation:
It's because 1is less than 5
20 x 2=40
10 x 4=40
8 x 5= 40
so 2 bags of balloons
4 bags of horns
5 packages of candy