I need to know the answer to 4(10+2x)

Select the quadratic that has root x = 8 and x = -5

What is the number 321,000,000 in scientific notation? also what is the number? ?

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?