Find ONLY the measure of angle B

What set does not contain -3 the set of all real numbers the set of all integers the set of all whole numbers the set of all rational numbers

It says factor each expression 49x-28?

Players on the school soccer team are selling candles to raise money for an upcoming trip. each player has 24 candles to sell. if a player sells 4 candles a profit of$30 is made. if he sells 12 candles a profit of $70 is made