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


Answer:
c
Step-by-step explanation:
The answer to your question is 1000.
Answer:

Step-by-step explanation:
The quadratic function has equation
and the cubic function has equation
.
The function
is defined on the interval
.
The function
is defined on the interval 
The required piece-wise function is

Answer:
24 units²
Step-by-step explanation: