22000=15000(1+.089/4)^4t
22/15=(1.02225)^4t
log(22/15)=4tlog1.02225
(log(22/15)/4log1.02225)=t
(.16633/.038228)=t
t=4.35 years or 4 years and approximately 4 months
Solve the multiplication first then the division and the subtract them to get something like this:

which simplifies to 29.7 (3 significant figure )
Answer:
The lines do not intersect, it is parallel therefore there is no solution.
Step-by-step explanation:
Sorry, I'm going to need a more accurate question. How many kids are there in total?