To adopt a dog from an animal shelter, you must pay $80 for vaccinations, $65 to spay or neuter the dog, and $50 for a wellness exam by a veterinarian. 
 a. Write an expression in the simplest form that represents the amount (in dollars) it costs to adopt x dogs. 
 An expression is (?) dollars.
 Question 2
 b. What does the coefficient of the expression in part (a) represent?
 Responses
 the total cost (in dollars) of adopting one dog
 the total cost (in dollars) of adopting one dog
 the total amount (in dollars) the veterinarian is paid when one dog is adopted
 the total amount, (in dollars), the veterinarian is paid when one dog is adopted
 the total cost (in dollars) of adopting x dogs
 the total cost (i, n dollars), of adopting x dogs
 the total amount (in dollars) the animal shelter earns when x dogs are adopted
 the total amount (, in dollars) the animal shelter earns when , x, dogs are adopted
 please and thank you!