Edwin Hubble’s claim to astronomy fame is the Hubble distance-red shift relation

Question

Edwin Hubble’s claim to astronomy fame is the Hubble distance-red shift relationship. He was one of the first to document the large scale, Universe-wide expansion of space. In fact, the further away a galaxy is from our own, the faster it appears to be moving away from us. The Hubble relationship between distance and speed is given as:

Where the variable D is the distance from our galaxy to an observed galaxy, v is the apparent speed at which the galaxy is moving away from ours, and H0 is a constant. If an astronomer knows the values of H0 and v, he can solve for the distance. Which of the following equations is correctly rearranged to solve for D ?

Explanation / Answer

The equation for the Hubble's distance is the 1st one i.e. D=V/Ho

Ho- is a constant which is currently 73.8km/sec/mpc

V- apparent speed at which the galaxy is moving away from ours

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