Question

hat is the slope for the following table of values? The table represents the total amount spent in a paperback book club after an introductory fee of $12.

# books purchased
1
2
3
4
Cost of book club
21
30
39
48
A. 3
B. 5
C. 7
D. 9

Answer 1

Just look at by how much the cost changes every time you buy a book.

Answer 2

use the books purchased as the x values and the cost of book club as the y value.