the equation y = 0.002x - 0.30 can be used to determine the approximate cost, y in dollars, of producing x items. how many items must be produced so the cost will be no more than $387?

193650

Step-by-step explanation:

Since the cost must be no more than 387$, you can substitute that number instead of y to get 387 = 0.002x - 0.30. you can add 0.30 to both sides to get 387.3 = 0.002x

Then you can divide both sides by 0.002 to get 387.3/0.002 = 193650

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value