In a classroom, 1/10 of the students are wearing blue shirts , and 2/5 are wearing white shirts. There are 30 students in the classroom. How many students are wearing shirts other than blue shirts or white shirts?

Someone answer this asap for the length, in feet, of a rectangular rug is represented by the expression 5x² + 2x. the width, in feet, is represented by the expression 3x². which expression represents the perimeter, in feet, of the rug? a. 8x² + 2x b. 8x² + 4x c. 16x² + 2x d. 16x² + 4x