Could anyone tell me the answer of this question?
Pls answer fast

Consider a graph for the equation y= -3x+4. what is the y intercept? a) 4 b) -4 c) 3 d) -3

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?

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.