Afarmer planted 400,000 last year and this year he planted 275,650 how many more did he plant this year

Mrs. morton has a special reward system for her class. when all her students behave well, she rewards them by putting 3 marbles into a marble jar. when the jar has 100 or more marbles, the students have a party. right now, the the jar has 24 marbles. how could mrs. morton reward the class in order for the students to have a party?

Solutions for 2x+7 less than or equal to 3x-5

Can some one explain this i got sent this. is this a threat i’m scared