Question

In 2010, the estimated population of Chicago was 2.7×106 people. The population of Illinois that same year was about 4.76 times this number. Which expression shows the approximate population of the state of Illinois in 2010?

Answer 1

Let

x--------> the estimated population of Chicago in 2010

y--------> the estimated population of Illinois in 2010

we know that

$x=2.7*10^{6}\ people$ ------> equation 1

$y=4.76x$ ------> equation 2

Substitute equation 1 in equation 2

$y=4.76*2.7*10^{6}$

$y=1.2852*10^{7}\ people$

$y=12,852,000\ people$

therefore

the answer is

the approximate population of the state of Illinois in 2010 is

$y=12,852,000\ people$

Answer 2

Answer:

1.29 * 10^7 people

It makes sense.