Question

Hi! I need help with Math.
What was the approximate number of mobile cellular subscriptions per 100 people in Zimbabwe in 2003?

Answer 1

I have posted this question three times and I have not gotten any feedback or help. PLEASE HELP!

Answer 2

@dan815

Answer 3

@mathmate

Answer 4

You need to explain what you posted.
It is the results of an exponential regression of a given data set.
The results show that the modelling function is
f(x)=ab^x, where
a=1.06795095
b=1.501755837
The regression coefficient is 0.97, which means that the model is quite close to the points on the data set.

HOWEVER, unfortunately the question did not state what x stands for, i.e. x is not properly defined.

Now back to the question:
What was the approximate number of mobile cellular subscriptions per 100 people in Zimbabwe in 2003.
A reasonable GUESS for the value of "x" in the regression equation is number of years since 2000.
So for 2003, x=3, and substitute in the formula to get a value.
Round this value to the nearest integer will give you the \(probably\) answer.

Answer 5

*probable

Answer 6

but how do i put that all together?

Answer 7

Substitute x=3 in the following:
f(x)=ab^x, where
a=1.06795095
b=1.501755837
AND remember that x has not been defined by the question, so x=3 is only a GUESS under circumstances of insufficient information, unless you have unposted additional information.