Question

A machine made 3 1/2 pencils in 1/6 of a minute. It made pencils at a rate of how many per minute?

Answer 1

1/6 = 3 1/2
2/6 = 7
3/6 = 10 1/2
4/6 = 14
5/6 = 17 1/2
6/6 = 21

The rate of change is 21

Hope this helps,
QueenBeauty666