Answer:
<h3>r =-12</h3>
Step-by-step explanation:

Exponential growth is
F=P(1+r)^t
F=future amount
P=present amount
r=rate
t=time in years
rate=2%=0.02
therefor the equation is
f(x)=23,000(1+0.02)^x
f(x)=23,000(1.02)^x
where x=time in years from 2012
Answer:
100 students on each bus
Step-by-step explanation:
100*4 is 400 so there might be just 4