In 2013, the estimated world population was 7.1 billion. Use a doubling time of 55 years to predict the population in 2028, 2053, and 2107 What will the population be in 2028?
The population will be billion.
(Round to one decimal place as needed.)

1.3 million hoops i believe

vertical=18cm horizontal=18cm hypotenuse=25.5

step-by-step explanation:

yes, gavin is right.

step-by-step explanation:

gavin is correct. 

this problem is about converting 9% per year to how many percent per quarter. the rate is still the same. it only differed in the time period. so, through dimensional analysis,

9% per year  × (1 year / 4 quarters) = 2.25% per quarter

if he was asked to convert 9% per year to how many percent per quarter  compounded quarterly, then you will not simply divide by four. this is because compounding is not linear.

hope this , have a good day. c;