Find the midpoint of diagonal bd. figure abcd is shown. a is at negative 3, 2. b is at 0, 6. c is at 6, 6. d is at 3, 2.

We just need the points B and D to solve this. B = (0,6) and D = (3,2).
Add the components together and average them.

midpoint(B,D) = ((0 + 3) / 2) , ((6 + 2) / 2)

= (1.5, 4)

Hopefully this is the right answer.

The answer for you question is b

Iam not sure , but probably 750 or 7.5