The price of an antique book is $91, which is two-fifths more than the cost to the book dealer. find the cost and show work.

An advertising firm has an old computer that can prepare a whole mailing in 6 hours. with the of newer model the job is complete in 2 hours. how long would it take the newer model to do the job alone?

5,600 x 10^3 = a) 560 b) 5,000,600 c) 5,600,000 d) 56,000

Ahiker stands at an unknown elevation before he ascends 2 miles up a mountain to an elevation of 9 miles. find the elevation of the hiker before his ascent.