When is 9+10 really equal to 21

If 3x+8=3x+8 is it one solution or no solution

Which sentence uses an objective tone? we will plant the best garden of any school in the area. the new campus garden will surely be envied by other schools. a garden would provide numerous benefits to the students. you will probably agree that gardens have many benefits.

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?