Find the value of In(-7). a is +1.9459 b. is +0.7467 C. - 1.9459 d. 1-0.7467 ​

Astick 2 m long is placed vertically at point b. the top of the stick is in line with the top of a tree as seen from point a, which is 3 m from the stick and 30 m from the tree. how tall is the tree?

Aball is dropped from a height of 10m above the ground. it bounce to 90% of its previous height on each bounce. what is the approximate height that the ball bounce to the fourth bounce?

Pls the last one and it has to be like number 6