I don't know so sorry I'll let you know when I do.
Step-by-step explanation:
Area of shaded region = area of exterior rectangle - area of interior rectangle

Answer:
3/7 or .43
Step-by-step explanation:
1 goes in to 7, 7 times so all you have to do is 3/7
i think there should be 8 factorial. that is, 8 times 7 times 6 times 5 times 4...