A principal of $19,500 is invested at 6% annual simple interest for 9 years. How much interest is earned?

Asocial networking site currently has 400,000 active members, and that figure is predicted to increase by 32% each year. the following expression represents the number of active members on the site after t years.

Asurvey of 2,000 doctors showed that an average of 3 out of 5 doctors use brand x aspirin.how many doctors use brand x aspirin

What are the domain and range of f(x)= -log5(x+2)