You use variables for the equation and after you find out the variables you set them equal to each other and see if they are equal
A function in math is a relationship or expression involving one or more variables.
Answer:
hours
Step-by-step explanation:
First let's get the flat fee of 14 out of the way, because he wants to earn 86 dollars and the 14 dollar fee is the y intercept.

We would then divide 72 by the slope (14 per hour) to see how many hours he has to work:

I would just simplify because this decimal isn't exact

So 36/7 hours
10 × 0.1 × t = 200
1 × t = 200
t = 200