Answer:
rectangle: 30 in^2
triangle: 12 in^2
composite: 42 in^2
Step-by-step explanation:
area of a rectangle: length times width
area of a triangle: 
composite area: break the area up by shapes you can find the area of, then add it back together
-2° was the initial temperature as it dropped to -5°
-2-5=-7
Hope this helped
10 is letter b. I hope this helps!!!