Using the given function y = 0.86x - 0.09, we can substitute y = 18 to find the corresponding value of x:
18 = 0.86x - 0.09
18 + 0.09 = 0.86x
18.09 = 0.86x
x ≈ 21
Therefore, the best prediction for the number of pages in a chapter that takes 18 minutes to read is 21.
The data in the table compares x, the number of pages in a chapter, to y, the amount of time, in minutes, spent reading. The function y = 0.86x – 0.09 models the data in the table.
A 2-column table with 5 rows. The first column is labeled pages in a chapter with entries 10, 12, 5, 26, 20. The second column is labeled time spent reading (minutes) with entries 8, 11, 4, 22, 17.
Which is the best prediction for the number of pages in a chapter that takes 18 minutes to read?
15
17
19
21
1 answer