Please help this is due soon and I am really confused. 20 Points

In which figure is de bc ? a. figure 1 b. figure 2 c. figure 3 d. figure 4

Write a fraction less than 1, which has a denominator of 6 and is greater than 3/4 plz answer !

Can someone factor this fully? my friend and i have two different answers and i would like to know if either of them is right. you in advance. a^2 - b^2 + 25 + 10a