Part a: explain why x = 5 makes 4x − 1 ≤ 19 true but not 4x − 1 < 19. (5 points) part b: what value from the set {6, 7, 8, 9, 10} makes the equation 5x + 2 = 47 true? show your work. (5 points)

Solve the problem by making up an equation. a man could arrive on time for an appointment if he drove the car at 40 mph; however, since he left the house 15 minutes late, he drove the car at 50 mph and arrive 3 minutes early for the appointment. how far from his house was his appointment?