Question

Hello could you please help me with question number five?

Answer 1

Question #5

Given:

The number of people who own computers has increased 23.2% annually since 1990

In 1990: the number of people who own computers = half a million

We will predict the number of people in 2015

We will use the following formula:

`P(t)=P_o\cdot(1+r)^t`

Where: (r) is the ratio of increasing = 23.2% = 0.232

And (t) the number of years after 1990

And P₀ is the initial value of the number of people

P(t) will be the number of people after (t) years

To predict the number of people in 2015

t = 2015 - 1990 = 25 years

so,

`\begin{gathered} P=0.5\cdot(1+0.232)^(15) \\ P=0.5\cdot1.232^(15)\approx11.43\text{ millions} \end{gathered}`

So, the answer will be:

The estimated number of people = 11.43 million