Question

The sale price of ground beef at a local grocery store is $1.49 for the 1st pound and 1.09 for each additional pound which functional shows how the cost of ground beef why depends on the number of pounds X

Answer 1

y=1.09(x-1)+1.49 where y is cost and x is in pounds we could further operate:

y=1.09x-1.09+1.49

y=1.09x+0.4 (note that the domain is x≥1)