Which system of equations models this problem? the variable x represents the number of angelfish carlos bought and the variable y represents the number of parrotfish he bought. carlos bought 405 tropical fish for a museum display. he bought 8 times as many parrotfish as angelfish. how many of each type of fish did he buy?
{x+y=405 y=8x
{x+4y=8 y=405x
{x−y=405 y=8x
{x+y=8 y=405x
i think d is that right