Cole has 86 coins, of which n are nickels, d are dimes, and q are quarters. The value of the coins is $7.90. There are twice as many dimes than quarters. How many nickels, dimes, and quarters does he have?

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