Mei bought a box of markers for b dollars, a shoulder bag that cost twice as much as the box of markers, and a pen that cost $6 less than the shoulder bag. write the cost of the pen in terms of b.

Anewborn baby had about 26,000,000,000 cells. an adult has about 4.94 times 10 to the 13 power cells. how many times as many cells does an adult have than a newborn

The lengths of nails produced in a factory are normally distributed with a mean of 4.91 centimeters and a standard deviation of 0.05 centimeters. find the two lengths that separate the top 4% and the bottom 4%. these lengths could serve as limits used to identify which nails should be rejected. round your answer to the nearest hundredth, if necessary.

What is the perimeter of a rectangular building that is 80 feet wide and 140 feet deep?