Match each tranformation with its description

Tha answers are c. 2 and d. 7.5 ; )

Line ab is y = -7/5x + 56/5i don't understand  where point d comes into this. 

Volume is length times width times height so
20 times 8 times 30 which is 4,800
surface area is ph (p is perimeter of base), h is height.
so perimeter would be length+length+width+width so 20+20+8+8 which is 56. so multiply 56 times 30 which is 1680. hope this !