Please help me with this.

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.

If p(a) = 0.70 and p(b) = 0.20, then a and b are independent events if

Describe the end behavior of the function below. f(x)=(2/3)^x-2 a. as x increases, f(x) approaches infinity. b. as x decreases, f(x) approaches 2. c. as x increases, f(x) approaches -2. d. as x decreases, f(x) approaches negative infinity.