Solve for x:
9^4=81^x-4

Use the function nest to evaluate p(x) = 1 + x + · · · + x50 at x = 1.00001. (use the matlab ones command to save typing.) find the error of the computation by comparing with the equivalent expression q(x) = (x51 − 1)/(x − 1).

Look at the figure xyz in the coordinate plane. find the perimeter of the figure rounded to the nearest tenth.

What is the length of side s of the square shown below?