Ned took a test with 20 questions. he lost 5 points for each of the 5 questions he got wrong and earned an additional 10 points for answering a bonus question correctly. how many points did ned receive or lose overall?

How to solve it and what thw answer is

Find the least common multiple of the expressions: 1. 3x^2, 6x - 18 2. 5x, 5x(x +2) 3. x^2 - 9, x + 3 4. x^2 - 3x - 10, x + 2 explain if possible

Need ! the total ticket sales for a high school basketball game were $2,260. the ticket price for students were $2.25 less than the adult ticket price. the number of adult tickets sold was 230, and the number of student tickets sold was 180. what was the price of an adult ticket?