Arectangular floor is 15 feet long and 12 feet wide. what is the area of the floor in square yards? be sure to include the correct unit in your answer.

You give a $4 tip for a meal that cost $22. approximately what percent of the bill was your tip?

Add, subtract, multiply, or divide as indicated. list any restrictions for the variable(s) and simplify the answers when possible. 1) x-2 / x+5 + 3x / 2x-1 2) x+6 / x-6 - x^2 / x+6 3) x+9 / x-4 + x+2 / x^2-11x+28 4) x / x^2-64 + 11 / 2x^2+11x-40 5) 5 / x + 11 / x-3 - x-4 / x^2+2x-15

20 ! brainliest ! add and simplify your answer.