How many triangles are there on the puzzle below?

Luis Garavito killed Density x Volume.

Who is Luis Garavito ?

Things are just as they seem, right? Well, check again.
Can you count the number of tigers in this picture ?

Count the number of times the letter "F" appears in the following paragraph:

FAY FRIED FIFTY POUNDS OF
SALTED FISH AND THREE POUNDS
OF DRY FENNEL FOR DINNER FOR
FORTY MEMBERS OF HER FATHER'S FAMILY.

Find the value of "a" by solving the maths equation in the picture below:

What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

What always comes into a house through the keyhole?

Below toothpicks/matchsticks indicate the group of fishes moving from west to east direction. Can you make them move from east to west by just moving three toothpicks/matchsticks?

A man is found dead in his bathroom naked with blood scattered all around him. The bathroom was locked from the inside and there is no trace of any struggle. There is nothing in the bathroom except his pant with the belt still around and his shirt. Also, the medic team can't find any incision in his body that may have been the reason behind so much blood loss.

The Police department is clueless regarding this murder mystery.
Can you?

I always drive my customer away.

Who am I?