Which graph does NOT represent a function?
Please I need an answer

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.

Aman is 6 feet 3 inches tall. the top of his shadow touches a fire hydrant that is 13 feet 6 inches away. what is the angle of elevation from the base of the fire hydrant to the top of the man's head?

3x + 4y = 5 x- 3y = -7 solve by substitution