I don't understand the question
The coefficient of y∧15×∧2 in expansion of (y∧3+x)∧7 is (15×2)+(3×7)= 51
Are you looking for y and if so y=80
What figure , are you trying to figure the volume for
I took 2 points from the graph and found my slope by using the slope formula, then I found my y-int which is the where the y crosses and that is -3. Hope this helps good luck !!
Answer: y=1/2x-3