What is the solution to the compound inequality?

Solve 2x − 1 = 11 for x using the change of base formula log base b of y equals log y over log b.

Brad earns $12.75/hr and works 40 hours a week. what is his gross annual income?

Asensitive measuring device is calibrated so that errors in the measurements it provides are normally distributed with mean 0 and variance 2.00. find the probability that a given error will be between -3 and 3.