There i a hooting range contet. And they recorded the top ix people' time. The firt peron finihed in 15 econd, the econd peron finihed in 26 econd. The third peron finihed in 35 econd, the fourth peron finihed in 47 econd, the fifth peron finihed in 54 econd, and the ixth peron finihed in 68 econd. What i the Function rule