Question

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 y of ground beef varies with the number of pounds x? Can you explain why it would not be y=1.09(x-1)+1.49?

Answer 1

You don’t need the -1 on that equation
You add 1.49 because that’s how much it cost for the 1st pound

And you would add 1.09x for the extra pounds

Y=1.09x+1.49