A waitress made $3.12 per hour plus $76 in tips on a Friday evening shift. The amount of money she makes for the night is given by the function P(t)=3.12t+76, where it is the number of hours she worked. How much would a waitress make for a 3-hour shift if the pay rate is the same? A 7-hour shift?

Part 1 of 2
The waitress would make $___ for a 3-hour shift

Part 2 of 2
The waitress would make $___ for a 7-hour shift.