From this, you already know that 2/7 of x is equal to 8 pounds (x being the actual weight of the package). the equation would be 2/7(x)=8 to simplify this, you divide both sides by 2/7. x=8/2/7. this is the same as x=8*7/2 which is x=56/2. so your finale answer is 28 because 56/2 is 28!
To calculate a volume of a rectangle prism, a cabinet we only need to multiply the dimensions it has, those are height, width, deep: v = (24)(72)(18) v = 31104 in^3
