What is a rational number between 1/8 and 1/4?

Which expression is equivalent to (3^2)^-2 a.-81 b.-12 c.1/81 d.1/12

1. writing an equation for an exponential function by 2. a piece of paper that is 0.6 millimeter thick is folded. write an equation for the thickness t of the paper in millimeters as a function of the number n of folds. the equation is t(n)= 3. enter an equation for the function that includes the points. (-2, 2/5) and (-1,2)

Use composition to determine if (x) or h(x) is the inverse of f(x) for the limited domain x2-1.