jill begins the summer with $500 in her savings account. each week, she withdraws $20. Her brother, Sam, starts the summer with $150 in his account. he adds $30 to his account each week. at what week will both Jill and Sam have the same amount in their account..

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?