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Graph the two populations for the first ten years on the same graph.
-> See attached
-> Red = Milmo City
-> Blue = Ridge City
a. How long does Milmo City have a smaller population compared to Ridge City?
t < 4 years
(Less than four years, you could also say for 4 years)
b. According to the linear equations, does Milmo City ever have a smaller population after the populations become equal? Explain your reasoning why.
No. These are linear equations so they will keep going in a straight line forever.
c. When is the population of Ridge City double the population of Milmo City?
30 years. We can set up an equation to solve easily without having to guess from our grpah:
2([tex]\frac{2}{3}[/tex]t + 6) = [tex]\frac{5}{3}[/tex]t + 2
[tex]\frac{4}{3}[/tex]t + 12 = [tex]\frac{5}{3}[/tex]t + 2 -> 3([tex]\frac{4}{3}[/tex]t + 12) = ([tex]\frac{5}{3}[/tex]t + 2)3
4t + 36 = 5t + 6
4t + 30 = 5t
30 = t -> t = 30
d. Explain why Milmo City has a smaller population at the start but will have a larger population after nine years compared to Ridge City.
The slope of Milmo's population is steeper than Ridge City's population, so Milmo's population climbs much faster than Ridge's, which is why it eventually is larger.
Have a nice day!
I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)
- Heather
