Plz solve this for me as soon as possible

Customers at an ice-cream shop took a survey .the results showed that 144 customers rated the shop as being "very satisfactory ."this number represented 45%of the total nunber of customers who took the survey

How many grams the dog will eat in 3 days?

Check all that apply. f is a function. f is a one-to-one function. c is a function. c is a one-to-one function.