The sale 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 rule shows how the cost of ground beef, y, depends on
the number of pounds, x?
y=1.49x+1.09
y 1.09(x-1) + 1.49
y (1.09 +1.49)x
y = 1.09x + 1.49
The correct function rule is y = 1.49 + 1.09(x-1) or y = 1.09x + 0.4.
The correct function rule that shows how the cost of ground beef, y, depends on the number of pounds, x is:
y = 1.09x + 1.49