I need help on this assignment, I need to find the angles of the blank spaces. Anything is appreciated!

The ratios 3: 9, 4: 12, 5: 15, and 6: 18 are a pattern of equivalent ratios in the ratio table. which is another ratio in this pattern?

If you were constructing a triangular frame, and you had wood in the length of 4 inches, 4 inches, and 7 inches, would it make a triangle? would you be able to create a frame from these pieces of wood?

There are 85 apples on the big tree, john picked out 15%. how many did john pick out?