Question

A classroom fish tank contains x goldfish. The tank contains 4 times as many guppies as goldfish.

Enter an equation that represents the total number of guppies, y, in the fish tank.

Answer 1

Your answer is y = 4x

The phrase 4 times as many means we multiply the goldfish (x) by 4 to get the number of guppies (y):
y = 4x