The sales price of ground beef at a local grocery store is $1.49 for the first pound and $1.09 for each additional pound. Which function will shows how the cost of beef, y, depends on the number of pounds, x?
A. Y =1.49x +1.09
B. Y = 1.09(x-1)+1.49
C. Y = ( 1.09 + 1.49) x
D. Y=1.09x+1.49