In mrs chapman's math class 2/3 of the students got either an a or b on the last test . of these students , 2/5 got a b the model illustrates this situation .what fraction of the class got a b on the last test?

Alina fully simplifies this polynomial and then writes it in standard form. xy2 – 2x2y + 3y3 – 6x2y + 4xy2 if alina wrote the last term as 3y3, which must be the first term of her polynomial in standard form? xy2 5xy2 –8x2y –2x2y