SOLUTIONS
Given: Assume y is the population
[tex]\begin{gathered} t=0=1960,y=14030 \\ t=1=1961,y=14060 \\ so\text{ b = 14000} \\ so\text{ k = 30} \end{gathered}[/tex]
The town grow at the rate of 30 people per year.
[tex]y=kt+14000[/tex][tex]y=30t+14000[/tex]
(A) The population predicted to be in 2030 will be
[tex]\begin{gathered} 2030-1960=70 \\ y=30k+14000 \\ y=30(70)+14000 \\ y=2100+14000 \\ y=16100people \end{gathered}[/tex]
(B) so when y = 15000, find t
[tex]\begin{gathered} y=15000 \\ y=30t+14000 \\ 15000=30t+14000 \\ 15000-14000=30t \\ 1000=30t \\ t=\frac{1000}{30} \\ t\approx33 \\ t=1960+33 \\ t=1993 \end{gathered}[/tex]