Answer:

Step-by-step explanation:
Represent
- number of jackets with x
- costs of jackets with y
So, we have:


Required
Write an equation in form of y = mx + b
First, we need to determine the slope (m)




The equation is calculated using:

Where


So, we have:


Make y the subject


The answer is negative 84 because there are to ne

which means the remainder upon dividing

by

is 93.
This is because we can write

where

is the quotient and

is the remainder. Multiplying both sides by

, then evaluating at

makes the

term vanish, leaving the remainder: