△RST shows a city's plan for a new building near the beach that will have free surfboard rentals. Given that the area of △RST is x, complete the equation m∠T = sin–1 m/n in terms of the variables x, r, s, and t.

Isabelle is mixing red and blue paint to make purple paint she adds 3/10 of a fluid ounce of red to 12/25 of a fluid ounce of blue to make 1 1/30 fluid ounces of purple how many fluid ounces of red paint ounces of red paint will she need to make 3 fluid ounces of purple paint