Ablock of copper weighs 2160g and has a volume of 240cm cubed. what is the density of the copper?

The graph represents the gallons of water in a water tank with respect to the number of hours since it was completely filled

Ineeeeed this is due tomorrow and i dont know the answer can you find all the exponents

Піf x = y and y= z, which statement must be true? оа. -x = -2 b. x= z ос. —x = 2 od. 2= x