Answer:
60
Step-by-step explanation:
4 = 1
1 = 60
Let's write the equation in standard from

Where,
- m is slope or rate of change
- b is the y-intercept or initial value
<h3>Let's start by finding slope⤵️</h3>

- x1, y1 = 0,12
- x2, y2 = 1,13



<h3>Equation⤵️</h3>

Textbook is y
Notebook is x
Formula
800 = 80y + 4x