Does this graph show a function? Explain how you know. A. No; there are y-values that have more than one x-value.
B. Yes, there are no y-values that have more than one x-value.
C. No; the graph fails the vertical line test.
D. Yes, the graph passes the vertical line test.

Plz help

Suppose that the price p (in dollars) and the weekly sales x (in thousands of units) of a certain commodity satisfy the demand equation 4p cubedplusx squaredequals38 comma 400. determine the rate at which sales are changing at a time when xequals80, pequals20, and the price is falling at the rate of $.20 per week.

Which of the following contains a variable?

If a line is defined by the equation y = 5x + 2, what is the slope?