Diane knows a phone call to a friend costs 25 cents for the first 3 minutes and 10 cents for each additional minute. The number of minutes you call and the cost of the call are related.
It should be y=.10x + .25 because for each additional minute you are adding 10 cents to ur total cost and then u add the 25 cents to ur amount because that’s how much it costs to make the call for the first 3 minutes.
