Find the value of x in each triangle

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

Select the correct answer from the drop-down menu. subtracting 3xy^2 from 8xy^2 gives the same result as the expression. [tex]3xy ^{2} - 8xy ^{2} [/tex][tex] { - 7xy}^{2} - {2xy}^{2} [/tex][tex] {7xy}^{2} - {2xy}^{2} [/tex]

65% of students in your school participate in at least one after school activity. if there are 980 students in you school, how many do not participate in an after school activity?