Question

The population of a city is 451,400. The population is expected to decrease at a rate of 3.2% each year.

What function equation represents the population of the city after t years?

http://prntscr.com/dhgv8g

Answer 1

Please note that #2 and #3 produce INcreases. Throw those out.

What say you of the other two?

Answer 2

I was thinking it's D.

Answer 3

That's a good guess, but it's deceptive With 0.032 in there, it's more a predictor of the number of people who leave, NOT the number of people remaining.

1 - 0.032 = 0.968 <== Now THAT is a better measure of who stays.

See how that works?

Answer 4

So it's A, I assume?

Answer 5

That's all there is left. More importantly, do you see how to judge that it is A?

Answer 6

Yes, I do.
Thank you.

Answer 7

Awesome. Keep up the good work.