The relationship between the number of pounds (lb) of peppers and the total cost in dollars is shown in the graph. What is the unit price of
peppers?

this isn't a quiz for me so don't at me)

Explanation:

The unit price is the price of 1 unit, in this case one pound. So we locate x = 1 on the x axis, draw a vertical line upward til we get to the diagonal line, and then draw a horizontal line until we reach the y axis. You should arrive at y = 3.

so, converting firstly the mixed fractions to improper fractions and then "adding".