The number of goldfish in a tank is 22, and the volume of the tank is 56 cubic feet. What is the density of the tank? A. 0.34 goldfish per cubic foot B. 0.39 goldfish per cubic foot C. 1.41 goldfish per cubic foot D.2.55 goldfish per cubic foot

B. 0.39 goldfish per cubic foot.

Step-by-step explanation:

You need to divied the number of goldfish in the tank by the volume of the tank.

Like this: 22/56= 0.39

Therefor the answer is B. 0.39 goldfish per cubic foot.

I hope this helps!!!

mr. flanders’ class sold 47 doughnuts and   mr. rodriquez’s class sold 38 cartons of milk

step-by-step explanation:

let x be the number of doughnuts sold by mr. flanders’ class and y be the number of cartons sold by mr. rodriquez’s class.

1. together, the classes sold 85 items, then

x+y=85.

2. both classes earn earned $104.49 for their school. if doughnuts were sold for $1.35 each, then x doughnuts costed $1.35x. if cartons of milk were sold for $1.08 each, then y cartons costed $1.08y. hence,

1.35x+1.08y=104.49.

3. solve the system of two equations:

x/3-10=8

x/3=18

x=48