Answer:
Rate of change is slope. (y = mx + b)
A slope of 5 should be 5/1. (5 over 1)
Step-by-step explanation:
Rise over run
aka
change in y over change in x
So
Total cost of the workbooks is d
And the number of workbooks is t
Therefore d = 95
95=19t
t=95/19=5
5 workbooks
