Evaluate the infinite geometric series:$$1-\frac{2}{7}+\frac{4}{49} -\frac{8}{343}+\dots$$

Find parametric equations for the line. (enter your answers as a comma-separated list of equations. let x, y, and z be functions of t.) the line in the direction of the vector 5 i + 5 j − 6k and through the point (−4, 4, −2).

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

How can you find the mean absolute deviation (mad) for this set of data?