Question

The populations of two cities after t years can be modeled by -150t+50,000 and 50t+70,0000 . What is the difference in the populations of the cities when t=4

Answer 1

25,800

Explanation:

Plug in 4 everytime you see T.

multiple-150 times 4 plus 50000 which gives you 49,400.

then multiple 50 times 4 and add 75000, giving you 75,200 then subtract 75,200 - 49,400 which you end up with 25,800.

hope this helped