Functions:

The function represents the cost.
The variable represents the number of dogs walked.
Answer:
1.(a)developing. 2.(b)economic
Explanation:
(1)Around 50-90% of people are farmers in a developing country.
(2)Economy or GNP of a country measure the standard of life of the citizen living in the country.
Answer:
One of Canada's most distinctive characteristics is its diverse population.
Explanation:
The population in Canada is widely diverse and unique.