Question

What was the approximate number of mobile cellular subscriptions per 100 people in Zimbabwe in 2003?

The display gives the result of performing an exponential regression on a data set where the inputs are years since 2000 and the outputs are the corresponding mobile cellular subscriptions per 100 on Zimbabwe.

ExpReg
y=a*b^x
a=1.067905095
b=1.501755837
r^2=.9525580427
r= .9759908005

A. 2
B. 4
C. 6
D. 8

Answer 1

The answer is 4 when you plug in the equation and solve it equals 4

Answer 2

B. 4

Explanation:

Given exponential model that shows the number of mobile cellular subscriptions per 100 people in Zimbabwe since 2000,

`y=a b^x`

Where,

a=1.067905095

b=1.501755837,

`\implies y=1.067905095(1.501755837)^x`

Since, the number of years from 2000 to 2003 = 3,

Thus, for finding the number of subscriptions in 2003,

x = 3,

Hence, the number of mobile cellular subscriptions per 100 people in Zimbabwe in 2003 is

`y=1.067905095(1.501755837)^3=3.61685122094\approx 4`

Option 'B' is correct.