Suppose the firm in this example considers a second product that has a unit profit of $5 and requires 2 hours of production time for each unit produced. use y as the number of units of product 2 produced.

show the mathematical model when both products are considered simultaneously. express your answers in terms of x and y.

the square root of what number? if you add that, then someone will probably answer the question.

sample answer: you can determine whether each element of the domain is paired with exactly one element of the range. for example, if given a graph, you could use the vertical line test; if a vertical line intersects the graph more than once, then the relation that the graph represents is not a function.