A maple syrup producer would like to increase production by 500 gallons per year with a goal of producing at least 20,000 gallons of syrup over the first period of production.

If the fist years's production, in gallons is given by x, write expressions for each of the other yearss' produtions.
year1=x year2= year3= year4= year5=

Find all possible values of syrup that could be produced in the first year to meet the goal of at least 20,000 gallons total over the five - year period.