Astronomers use the distance modulus function M(r) = 5 log r − 5, where M is the distance modulus and r is the distance of a star from Earth in parsecs. (One parsec is approximately 1.92 1013 miles, or approximately 20 trillion miles.) Use this function to answer the question below. Round to the nearest tenth.The distance modulus of "Star Alpha" is −1.21. How many parsecs from Earth is this star?

Astronomers use the distance modulus function M(r) = 5 log r − 5, where M is the distance modulus and r is the distance of a star from Earth in parsecs. (One parsec is approximately 1.92 1013 miles, or approximately 20 trillion miles.) Use this function to answer the question below. Round to the nearest tenth.The distance modulus of "Star Alpha" is −1.21. How many parsecs from Earth is this star?

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