Find the critical value x2r corresponding to a sample size of 3 and a confidence level of 95%

Let f(x) = x+3 and g(x) = 1/x the graph of (fog)(x) is shown below what is the range of (fog)(x)?

Asphere has a diameter of 10 in. what is the volume of the sphere?

The expression 1.01*1.005(^t) gives the amount of money, in thousands of dollars, in carter's savings account (t) years after he opens it. what does 1.01 represent in this expression?