Help pls thank you.

15\lb of course

Step-by-step explanation:

all u do is subtract the rate of change an youll get your answer

$0.50 / (lb)

Step-by-step explanation:

Let compare the price we have to pay for the 20-pound baggage and the 50-pound baggage. We are going to see that the 50-pound baggage costs $15. From this, we can see that the increase of the weight by 30 pounds resulted in the cost being $15 more. Now in order to find out the rate of change we divide $15 by 30 pounds so we know how much each pound costs, and so we get...

$15 / 30(lbs) = $0.50 / (lb)

a function could be identified in 3 ways either on a chart,graph, or ordered pairs. first a function is that each point has its own. the rule is that there can be many x's to one y but there can not be 2 x's at different y's. so on a graph when you put a straight line through the y's there should be one dot only to be a function.

step-by-step explanation: