Bar chart snake 5 dog 7 fish 10 cat 4 bird 3

A pet, or companion animal, is an animal kept primarily for a person's company or ... This includes 7 million dogs, 7.5 million cats, 16 million fish, 12 million birds, and 10 million snakes.

u + 4u = ?

According to the question, the value of u is 6.

6 + 4(6) = 6 + 24 = 30

u + 4u = 30 (If the value of u is 6)