Determine whether the statement is sometimes, always, or never true. Give an example or counter example. negative - positive = negative

Answer this question, only if you know the answer. 30 points and brainliest!

Ahome improvement store rents it’s delivery truck for $19 for the first 75 minutes and $4.75 for each additional 1/4 hour. if a customer rented the truck at 11: 10 am and returned the truck at 1: 40 pm the same day, what would his rental cost be?

Me asap! what is the slope of this line? enter your answer in the box.