Determine whether each of the following relations is a function.
algebra I​

Can any one me with the answers to these questions asap?

The amount spent on food and drink by 20 customers is shown below what is the modal amount spent ?

Tomas used 3 1/3 cups of flour and now has 1 2/3cups left. which equation can he use to find f, the number of cups of flour he had to begin with? f+3 1/3=1 2/3 f-3 1/3=1 2/3 3 1/3f=1 2/3 f/3 1/3=1 2/3