Can someone answer this asap? i got 52 which as a decimal would be 0.52 but it was wrong. what is the correct answer?

Which values for a and b will create infinitely many solutions for this system of equations? ax-y=8 2x+y=b

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 the result of expanding the series