Select the correct answer from each drop-down menu. Sean created this table to represent the balance of his loan, y, over a period of months, x. The equation for the line of best fit for Sean’s table of data is y = -115.9x + 8,007.30.

x y
0 $8,000
1 $7,888
2 $7,775
3 $7,661
4 $7,547
5 $7,432
6 $7,316
7 $7,200
8 $7,083
9 $6,966
10 $6,848
11 $6,729
12 $6,609
According to the line of best fit and using,
A) interpolation
B) extrapolation
Sean can estimate that the balance of his loan will reach $0 in a month
A) 71
B) 69
C) 68
D) 59
.

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?