Question

Population of a certain country is decreasing by 0.8% every year. The population in 2015 is 9 million, what will be the population in 2016

is it 16200000
Ms. Sue
No. Your answer shows a huge increase, not a decrease.

0.992 * 9,000,000 = ?

Rein
where did you get 0.992?
Rein
In a small oak tree, the biomass of insects makes up 3000 kilograms. This is 4% of the total
biomass of the tree. What is the total biomass of the tree?

is it 7500
Ms. Sue
1.00 - 0.8 = 0.992

0.04x = 3,000
Rein
so for the first question my answer is 892800?

where did you get 1.00?
Ms. Sue
No. 8.928,000
If you use commas in the appropriate places it's easier to read the numbers.


Ms. Sue
8,928,000