Determine the sum of the areas of the three triangles shown above.

What is the interquartile range (iqr) of the data set represented by this box plot?

The length of time it takes to find a parking space at 9 a.m. follows a normal distribution with a mean of 5 minutes and a standard deviation of 2 minutes. find the probability that it takes at least 8 minutes to find a parking space. (round your answer to four decimal places.)

What is the solution of |2x-5|< 21