I- need...friends...I got no one but my...bNobody's talkin to m f r e e points. It got deleted for some reason

6x - 8 = 16 solve the following equation. then place the correct number in the box provided.

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=

You're locked out of your house. the only open window is on the second floor, 25 feet above the ground. there are bushes along the edge of the house, so you will need to place the ladder 10 feet from the house. what length ladder do you need to reach the window?