Martha has 5 dogs and 6 cats. She takes each animal separately for a daily walk. She can take the animals for a walk to the park or to the barber shop. How many different options for a walk with a single animal does Martha have?
Answers.
A) 22 B) 9 C) 10 D) 18 E) 20
5 dogs, 4 cats; park/barber shop   1 dog - 2 options - either park or barber shop, so, 5 dogs - 10 options and 6 dogs - 12 options.   Total = 22 options.   22
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Martha has 5 dogs and 6 cats. She takes each animal separately for a daily walk. She can take the animals for a walk to the park or to the barber shop. How many different options for a walk with a single animal does Martha have?