In the function y 0.25x plus 3.5 y represents the cost of a gallon of milk after a certain number of years x. How much does the cost of milk increase every year?

In the function ( y = 0.25x + 3.5 ), the coefficient of ( x ), which is 0.25, represents the annual increase in the cost of a gallon of milk. This means that the cost of milk increases by $0.25 each year. Thus, for every year that passes, the price of milk rises by a quarter.