Sharon's trail mix contained 4 cups of grapefruit for every one cup of almonds. She writes the equation y = 4x to show the proptional relationship. Does x represent the number of cups of dried fruit or the number of almonds?Explain how you know

Kelly is a salesperson at a shoe store, where she must sell a pre-set number of pairs of shoes each month. at the end of each work day the number of pairs of shoes that she has left to sell that month is given by the equation s=300-15x , where s is the number of pair of shoes kelly still needs to sell and x is the number of days she has worked that month. what is the meaning of the number 300 in this equation