The total mass M of a binary system of stars depends on the separation s between the stars, the parallax angle a between the stars, and the period p of the stars' orbit. The relation is given by: M = s'a³p2 (a) If the period of the stars' orbit increases by 14%, will the mass of the binary system increase or decrease? (b) By what percentage will the mass of the binary system change? Round your answer to 1 decimal place and include the appropriate label.

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