Well to find the area of any figure you must first have knowledge on the formula. The formula for a triangle is 1/2 x b x h. Since you have the base 32, multiply that by 1/2 which will give you 16. Then you have to multiply 16 by the height. I'm not sure what the height is because you never gave me one but hopefully this helped! God bless :)
You didn’t show a picture of the graph, although the equation would be y=-1/2x+2
so every two x spaces forward you should go down one y space and the y should start at 2 when x = 0
I think Alexa would be since .3 is a larger number than .03
I believe its 80 if you derive it out, but there is no units of measurement.

She can cut 55 pieces from the cloth, and 10cm will be left over.
Hope this helps. - M