Answer:
According to the graph about <u>5 percent</u> of households in Africa owns a computer in 2008.
2013 about 1/3 of all households in <u>Asia</u> had a computer.
The number of households with a computer is <u>increasing</u> in all regions overtime.
The answer is the second one. 20.075

The formula of the sum of an arithmetic sequence:

We have:

substitute:

Answer: b. 21