Need a quick answer please

The table shows the balance of a money market account over time. write a function that represents the balance y (in dollars) after t years.

Which of the following is an example of a rational number? a. π b. √ 9 c. √ 8 d. 3.8362319

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?