What do astronomers use to calculate the age of the universe? Select three options

In which type of economy do the forces of supply and demand typically drive prices? a. a market economy b. a traditional economy a planned economy d. a command economy select the best answer from the choices provided. 0 0 em oo 0 0

How long does it take hair to grow 8 inches?

Can someone me? i need to have this done as soon as possible! i'm putting 20 points on this!