How do i convert 9 into a fraction and into a percent

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)

Ming says that 0.24 > 1/4 because 0.24= 2/4. which best explains mings error

Need this at the city museum, child admission is 6 and adult admission is 9.20. on tuesday, 132 tickets were sold for a total sales of 961.60. how many adult tickets were sold that day?