What is a simpler form of the expression 8n + 5n

Which of the following equations is of the parabola whose vertex is at (4, 3), axis of symmetry parallel to the y-axis and focus at (4, -3)? a.) y+3=1/24 (x+4)^2 b.)y-3=-1/24 (x-4)^2 c.)x-4=-1/24 (y-3)^2

5(-9w) put expression in distributive property

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