Practice worksheet : relations and functions

What's the difference between: x≥0 and nonnegative integer. ?

Each cookie sells for $0.50 sam spent $90 on baking supplies and each cookie cost $0.25 to make how many cookies does sam need to sell before making a profit formula: sales> cost

Which of the following values are in the range of the function graphed below? check all that apply ! - will give the answer "brainliest! "