HELP ME WITH THIS I'LL GIVE THE BRAINLIEST. For items 6 to 9, use illustration on long division that follows:

6. Which is the dividend?

A. 5x + 5
B. 5x -5
C. 25x2 - 50x +25
D. O
7. What is the remainder?
A. 5x + 5
B. X + 5
C. -5
D. O
8. Which is the quotient?
A. 5x + 5
B. 5x -5
C. 5x² + 14x-24
D. O
9. What is the process used to obtain the 2nd line?
A. Multiplying 5x by (5x-5)
C. Dividing 5x by (5x -5)
B. Adding 5x by (5x-5)
D. Subtracting 5x by (5x -5)

On a string instrument, the length of a string varies inversely as the frequency of its vibrations. an 11-inch string has a frequency of 400 cylces per second. find the frequency of a 10-icnch string.

Quick! a survey of 57 customers was taken at a bookstore regarding the types of books purchased. the survey found that 33 customers purchased mysteries, 25 purchased science fiction, 18 purchased romance novels, 12 purchased mysteries and science fiction, 9 purchased mysteries and romance novels, 6 purchased science fiction and romance novels, and 2 purchased all three types of books. a) how many of the customers surveyed purchased only mysteries? b) how many purchased mysteries and science fiction, but not romance novels? c) how many purchased mysteries or science fiction? d) how many purchased mysteries or science fiction, but not romance novels? e) how many purchased exactly two types of books?

Write 5(6x+4)-2(5x-2) in the form a(bx+c) where a, b and c integers and a> 1