Using the cosine function:

Solve for b:
Answer & Step-by-step explanation:
I can't draw the image, but I can explain it to you.
Since 1 unit was 3 units and now it's 9, you would have to divide each side by 3. So, the width would be 1 unit and the length would be 2 units.
I hope this helped!!!
The graph will be as shown in attached figure
Answer
8 degrees c per min
Step-by-step explanation:
If you look at the graph
1 min= to 2 c
2 min=to 10 c
10-2=8