If q is directly proportional to p and q = 28 when p = 4

i) express q in terms of p
ii) find the value of q when p=5
iii) calculate the value of p when q = 42

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