Answer:

Step-by-step explanation:
We want to prove algebraically that:

is a parabola.
We use the relations

and

Before we substitute, let us rewrite the equation to get:

Or

Expand :

We now substitute to get:

This means that:

Square:

Expand:




This is a parabola (0,2.5) and turns upside down.
B. seven minutes - because that is when the slope of the line is flat, which means he isn't moving.
The answer to your question is,
They have a total of $173 altogether!
-Mabel <3
If it was one year it would be 2200 and you just keep adding 200 for each year.