Liz wants to buy her favorite musical groups new cd the cd cost $15.24 including tax liz gives the store clerk a $20 dollar bill how much change should liz get back

Select the correct answer. what was edwin hubble's contribution to the field of astronomy? a. he discovered variable stars. b. he proved that the heliocentric model accurately described our solar system. c. he found a relationship between the period luminosity and distance of stars. d. he proved that the universe is finite. e. he discovered that the universe was expanding.