For what real values of $s$ is $x^2 + sx + 144$ the square of a binomial?

What is the slope simplify your answer and write it as a proper fraction, improper fraction, or integer

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?

If you had $1,900,000, how many days would it take you to spend all if you spent $1 a second. (there are 86,400 seconds in a day)