(8a + 3) + (a + 2) this math question bothers me because i cant find the answer.. ?

What is the solution to the equation 9^(x+1) =27

School has 204 sixth grade students. if the sixth grade is 30% of the total school, how many students are in the middle school?

Glenda makes an online purchase for picture frames for $12.95 each and formats of $5.89 each the site says it taxes paid by the customer or 6.5% of the total purchase price shipping charges are based on the