For Exercises 61–76: (a) Use a graph to estimate the solution set for eac...

For Exercises 61–76:

(a) Use a graph to estimate the solution set for each inequality. Zoom in far enough so that you can estimate the relevant endpoints to the nearest thousandth.

(b) Exercises 61–70 can be solved algebraically using the techniques presented in this section. Carry out the algebra to obtain exact expressions for the endpoints that you estimated in part (a). Then use a calculator to check that your results are consistent with the previous estimates.