Someone pls help me ill give out brainliest pls don’t answer if you don’t know

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.

How can you tell when x and y are not directly proportional?

Select the correct answer. what is the exact value of sin (157.5°)? a. 'sqrt(2 - sqrt(2))/2 b. *"-"'sqrt(2 + sqrt(2))/29 c.'sqrt(2 + sqrt(2))/4" d. "-"sqrt(2 + sqrt(2))/4)